The document discusses parametric modeling and its benefits. Parametric modeling uses parameters to control dimensions and shapes in CAD models. When parameters are changed, related geometry is automatically updated based on design intent. This allows for easy design changes and exploration of design alternatives. Parametric modeling provides benefits like easier design revisions, rollback of design changes, and reuse of legacy data.
introduction of engineering graphics ,projection of points,lines,planes,solids,section of solids,development of surfaces,isometric projection,perspective projection
introduction of engineering graphics ,projection of points,lines,planes,solids,section of solids,development of surfaces,isometric projection,perspective projection
Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
Its purpose is to accurately and unambiguously capture all the geometric features of a product or a component. The end goal of an engineering drawing is to convey all the required information that will allow a manufacturer to produce that component.
Here in this presentation we will be dealing with Nurbs and the major difference between polygons and nurbs, modelling, technical specifications, basic control points, general equations of nurbs and nurb surfaces, nurb manpulating, knob removal
Basics of engineering drawing by Rishabh NatholiaRISHABH NATHOLIA
This is my work to make sure it is easy to understand the basic of Mechanical Engineer Drawing.It is a made for all and a quick bite to the very basics of engineering drawing. This data will also help the students to score more in their subjects. This will also help on design sector interviews.
Standards for computer graphics- Graphical Kernel System (GKS)- standards for exchange imagesOpen
Graphics Library (OpenGL)- Data exchange standards - IGES, STEP, CALS etc. communication
standards.
Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
Its purpose is to accurately and unambiguously capture all the geometric features of a product or a component. The end goal of an engineering drawing is to convey all the required information that will allow a manufacturer to produce that component.
Here in this presentation we will be dealing with Nurbs and the major difference between polygons and nurbs, modelling, technical specifications, basic control points, general equations of nurbs and nurb surfaces, nurb manpulating, knob removal
Basics of engineering drawing by Rishabh NatholiaRISHABH NATHOLIA
This is my work to make sure it is easy to understand the basic of Mechanical Engineer Drawing.It is a made for all and a quick bite to the very basics of engineering drawing. This data will also help the students to score more in their subjects. This will also help on design sector interviews.
Standards for computer graphics- Graphical Kernel System (GKS)- standards for exchange imagesOpen
Graphics Library (OpenGL)- Data exchange standards - IGES, STEP, CALS etc. communication
standards.
Automatic Computer-Aided Design (AutoCAD 2D) engineering drawing is an important
component in BFPD courses. This software is commonly practiced by students for the product
design process as part of the project development. However, there is a lack of quality in 2D
engineering drawing that affects the students’ prototype making process and project progression.
This paper intends to identify the problems that weakened the students' performances of the
AutoCAD 2D engineering drawings. Data were collected from the students’ examinations,
assignments, and independent projects. Semi-structured interviews were also conducted with the
students.
Advantages of CAD Drafting Over Manual Drafting | Shalin DesignsShalin Designs
Explore benefits of CAD drafting over manual methods. Enhance precision, save time, and elevate your design process. Discover why CAD is the future of drafting at Shalin Designs.
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A course plan of CAD and CAE showing software familiarity of AUTOCAD, SOLIDWORKS, ANSYS, CATIA. The requirement of upskilling for mechanical engineering.
Automatic Identification of Sub Assembly in an Assemblyishan kossambe
Assembly is a hierarchical process. It involves the
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subassemblies at the design stage as it is not practical to
handle the design of the whole product. Splitting the
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challenge. There is a need to identify subassemblies
automatically without human interference. This paper aims at
detecting the subassemblies by making use of Application
Programming Interface (API) of the computer aided design
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Novel Approach to Automatically Generate Feasible Assembly Sequenceishan kossambe
Today the assembly sequence for the items is regularly completed manually and its definition, typically, is extremely extravagant, not ensuring ideal arrangements. Gathering arrangement arranging utilizing a business framework regularly depends on a master assembly sequence organizer, and it is dominatingly done manually. The difficulties to consequently produce gathering arrangements utilizing CAD models lie as a part of smart thinking and investigation of the displayed assembly information. This work displays a programmed approach expected to characterize gathering sequences, based on the data containing the mates, obstruction and the volume information existing among the parts, which is acquired by the assembly CAD model of the item. This paper exhibits a framework that can examine and use assembly information accessible from a CAD model to produce gathering arrangements. The framework likewise considers client input as a kind of assembly obligation. The framework is equipped for creating a set of positioned attainable assembly arrangement plans for an administrator to assess. A matrix approach has been embraced to process the data held from a CAD model. Obstruction and volume studies are completed amid the formation of assembly sequence plans.
Semi-Active Vibration Control of a Quarter Car Model Using MR Damperishan kossambe
This presentation analytically evaluates the dynamic response of a quarter car using semi active control system. Semi active control system are becoming popular because they provide with good reliability like passive system and consume less power to give better performance than the active system. Magnetorheological (MR) fluid can produce good controllable damping force under the application of magnetic field and hence can be used as effective element in semiactive vibration control.
Out of the various semi active control strategies, the Bouc-Wen model control strategy is used in this work. Response of the quarter car is measured using MR damper and compared with normal passive damper.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
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2. INTRODUCTION
The first CAD-systems used by aerospace and automotive
enterprises from the mid-1960s, were 2D systems – an
electronic version of a drawing board.
Soon it became clear that design should be based on 3D
product models, whose 2D projections can be generated
automatically
However, simply adding a third coordinate to traditional 2D
graphics results in modeling only a wireframe, which is not
sufficient for calculating mass/volume characteristics of a
future product
This led to the evolution of solid modeling
3. INTRODUCTION
A simple solid model had its own limitations
It could not be easily manipulated or changed for
implementing design changes
Hence there was need to device a new method to allow the
designer to easily manipulate the model as desired by him
without loosing the design intent
Hence came the parametric modeling
4. WHAT IS PARAMETRIC MODELING?
The term parametric modeling denotes the use of parameters
to control the dimensions and shape of CAD models.
Parametric Design - a system that constructs relations among
the geometry of different elements. When one element is
changed, the geometry of the rest of the elements are
changed as well.
5. PRIMITIVE ELEMENTS:
1. Dimensions can be linear and angular
2.Datums. Different CAD systems provide various types of
datums, but typically datum planes and datum coordinate
systems are provided. Datum lines and points are also
possible. Generally, datums are coordinate systems, or parts
of coordinate systems, that are used to control other
coordinate systems or geometric entities.
3. Constraints can be geometric or algebraic relationships that
the designer wants to impose on the geometry of CAD
models.
a) Geometric constraints are parallel, perpendicular,
offset, tangent, and alignments.
b) Algebraic constraints are equations that the designer adds
to ensure that features sizes meet design requirements. For
example, a part cross section may have to be a certain area.
6.
7.
8.
9.
10. NEED OF PARAMETRIC MODELLING
1.CONCEPT DESIGN-
• Convey a visual representation of the idea or concept.
• Create as many design concepts as possible.
• Evaluate the concept that best captures specified criteria and
aesthetic requirements.
2. BID AND PROPOSAL PROCESS-
• Minimize the time and costs required to create the bid geometry
• Submit models and geometry to support a proposed customer
price
• Accurately convey and communicate proposal requirements and
costs
• Improve accuracy of the prop osal to meet budget and schedule
commitmentsParametric
11. 3. DIGITAL PROTOTYPING-
• Design, iterate, optimize, validate and visualize
products before they are built
• Rapidly create and explore design geometry
• Enable fast changes to legacy and heterogeneous
data
4. 2D DESIGN AND CONVERSION TO 3D-
• Support quick 2D concept design and the creation
of 2D engineering deliverables
• Accelerate the 2D-to-3D conversion process to
evolve 2D drawings into 3D models
12. 5. REUSE LEGACY DATA-
Reuse and maintain legacy 2D & 3D data to
support current and future programsParametric
13.
14. BENIFITS OF PARAMETRIC MODELING
3D modelling software can automatically update related parts of the
model when design changes are made and there is full bi-
directional associativity between parts, assemblies and drawings.
It captures and stores the design intent of the designer so that any
changes in the geometry will not affect the design intent for
which the part was designed
3D systems provide easier design revisions
Parametric modellers have a rollback feature that shows the
sequence in which the model was created
Adding design intent in the form of constraints between the model
elements and saving them in the file together with the model
simplifies future editing.
15. DESIGN INTENT
In parametric modeling, dimensions control the model.
Design intent is how your model will react when dimension
values are changed.
16. DESIGN INTENT
2.50
4.00
1.25
2.50
The drawing shows the intent of the
designer that the inclined plane
(chamfer) should have a flat area
measuring 2.5 inches and that it
should start at a point 1.25 inches
from the base of the drawing. These
parameters are what the designer
deemed significant for this model.
Remember that the placement of dimensions is very important because
they are being used to drive the shape of the geometry. If the 2.5 in.
vertical dimension increases, the 2.5 in. flat across the chamfer will be
maintained, but its angle will change.
17. DESIGN INTENT
In this drawing, what is important to the
designer is the vertical location and
horizontal dimension of the chamfer, rather
than the flat of the chamfer. 2.50
4.00
1.25
2.125
2.50
4.00
1.75
30.0O
In the last drawing, the designer calls for a specific
angle for the chamfer. In this case the angle of the
chamfer should be dimensioned.
19. PARAMETRIC MODELING
The true power of parametric modeling shines through when design changes need
to be made. The design modification is made by simply changing a dimension.
Since the counterbore is associated with the top surface of the ring, any changes in
the thickness of the ring would automatically be reflected on the counterbore
depth.
60
10
15
30Pattern: 8 Holes
30. WHY PARAMETRIC MODELING?
Determine the shape and size of the geometry at
any time during the design process.
This part should
be 5 in. long, not
3 in. How can we
fix this without
redrawing it?
32. VIRTUAL REALITY
To understand what is AUGMENTED REALITY first we need to see what is Virtual reality?
Virtual reality is using computer technology to create a simulated, three-dimensional world
that a user can manipulate and explore while feeling as if he were in that world.
It includes:
Three-dimensional images that appear to be life-sized as seen by the user.
The ability to track a user's motions, particularly his head and eye movements, and
correspondingly adjust the images on the user's display to reflect the change in
perspective
An effective VR experience causes you to become unaware of your real surroundings and
focus on your existence inside the virtual environment.
DEFINITION : Augmented reality (AR) is a field of computer research which
deals with the combination of real-world and computer-generated data.
33. AUGMENTED REALITY
VR technologies completely immerse a user inside a synthetic environment. While
immersed, the user cannot see the real world around him.
In contrast, AR allows the user to see the real world, with virtual objects superimposed upon
or composited with the real world.
AR supplements reality, rather than completely replacing it. It creates the illusion that the
virtual and real objects coexisted in the same space.
Augmented reality adds graphics, sounds, haptic feedback and even smell to the natural
world as if it exists.
34. WHAT IS REAL AND WHAT IS NOT Real desk with virtual lamp and
two virtual chairs
(ECRC)Is this VR or AR?
35. WHY AR?
AR enhances a user’s perception of interaction with the real world.
The virtual objects display information that the user cannot directly detect with his own
senses.
The information conveyed by the virtual objects helps a user perform real-world tasks.
AR is a specific example of what is known as Intelligence Amplification (IA): using the
computer as a tool to make a task easier for a human to perform.
36. Characteristics: Optical vs. Video
Optical see-through HMD
conceptual diagram
Video see-through HMD
conceptual diagram
AR can be accomplished using either optical HMD or video HMD
HMD:-HEAD MOUNT DISPLAY
37. Main classes of applications:
1. Medical
2. Manufacturing and repair
3. Annotation and visualization
4. Robot path planning
5. Entertainment
6. Military aircraft
APPLICATIONS
38. TYPICAL APPLICATIONS:-
1.Medical.
The system can be used in pre-operative planning of a laparoscopic surgical
procedure in order to find both the right points to introduce the surgical
instruments and the best path to reach the organ concerned in the surgical
operation.
2.Educational purpose
A very handy tool for instructors and faculty members for subjects involving
complex understandings.
APPLICATIONS
39. Head Up Guidance System
(HGS)
(Flight Dynamics Inc.)
Boeing 737 cockpit with Head-
up Display (HUD)
(Flight Dynamics Inc.)
APPLICATIONS:AIRCRAFT
40. Nightvision system in the 2000 Cadillac DeVille
(Cadillac.com.)
APPLICATIONS: NIGHT VISION