The document discusses stresses in beams, including:
1. Pure bending causes zero shear force, resulting in a constant bending moment along the beam.
2. A positively curved beam under bending moment develops compression on top and tension on bottom, with the neutral axis in between with zero stress.
3. Shear stresses in beams are highest at the center of rectangular beams and at the edge of circular beams.
4. Slope, deflection, and radius of curvature are related through beam equations involving the bending moment and moment of inertia.
The document discusses stresses in beams, including:
1. Pure bending causes zero shear force, resulting in a constant bending moment along the beam.
2. A positively curved beam under bending moment develops compression on top and tension on bottom, with the neutral axis in between with zero stress.
3. Shear stresses in beams are highest at the center of rectangular beams and at the edge of circular beams.
4. Slope, deflection, and radius of curvature are related through beam equations involving the bending moment and moment of inertia.
The document discusses energy methods for structural analysis, including the total potential energy method. It provides examples of deriving the strain energy stored in different structural members under different loading conditions such as axial force, bending moment, shear force, and torsion. It also provides examples of using the principle of stationary total potential energy to solve for displacements in determinate structures by assuming a displacement function and minimizing the total potential energy.
The document discusses concepts related to stress analysis and design of structures including:
- Normal stress, shear stress, and bearing stress
- Stress analysis using statics to determine internal forces and stresses
- Design considerations like material selection and sizing based on allowable stresses
- Examples calculating stresses in rods, pins, and connections of a structure under a load.
Friction and type,laws,angle,coefficientSuraj Seth
Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces provide the traction needed to walk without slipping, but they also present a great measure of opposition to motion. Types of friction include kinetic friction, static friction, and rolling friction.In engineering applications friction is desirable and undesirable. We can walk on the ground because of friction. Friction is useful in power transmission by belts. It is useful in appliances like brakes, bolts, screw jack, etc. It is undesirable in bearing and moving machine parts where it results in loss of energy and, thereby, reduces efficiency of the machine. In this unit, you will study screw jack, clutches
The document discusses energy methods for structural analysis, including the total potential energy method. It provides examples of deriving the strain energy stored in different structural members under different loading conditions such as axial force, bending moment, shear force, and torsion. It also provides examples of using the principle of stationary total potential energy to solve for displacements in determinate structures by assuming a displacement function and minimizing the total potential energy.
The document discusses concepts related to stress analysis and design of structures including:
- Normal stress, shear stress, and bearing stress
- Stress analysis using statics to determine internal forces and stresses
- Design considerations like material selection and sizing based on allowable stresses
- Examples calculating stresses in rods, pins, and connections of a structure under a load.
Friction and type,laws,angle,coefficientSuraj Seth
Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces provide the traction needed to walk without slipping, but they also present a great measure of opposition to motion. Types of friction include kinetic friction, static friction, and rolling friction.In engineering applications friction is desirable and undesirable. We can walk on the ground because of friction. Friction is useful in power transmission by belts. It is useful in appliances like brakes, bolts, screw jack, etc. It is undesirable in bearing and moving machine parts where it results in loss of energy and, thereby, reduces efficiency of the machine. In this unit, you will study screw jack, clutches