An innovative technology that enablesa new approach to the mechanical design process Robust design from the preliminary stagePre-CAD optimization of complex systemsbased on GD&T, process characteristics &complex mechanical aspects.Generation of tolerance stackswith optimization - Simplified Enventive Engineering
Is it possible to achieve a robust design the first time, every time ?A strategic challenge industrial organizations need to address is how to improve their ability toefficiently generate robust product designs.(A robust design is a design that will assemble without issues, that will operate as expected onall its key functional requirements and that will continue to operate whatever are the manufacturingvariations, or the internal and external impacts (wear, thermal expansion, harsh conditions...)).In the main, solving this challenge comes down to answering two questions:- How should we organize our product development process ?- What tools and methodologies should we apply ?Unfortunately, the traditional answers to those two questions don’t take sources of variation intoaccount when making decisions at the design definition stage.Tolerance analysis occurs late in product development, just prior to production release,or in the manufacturing stage, necessitating troubleshooting of low production yields, field failures,ECNs, tooling rework and warranty problems. Tolerance analysis becomes a bottleneck, and thisworkflow recycles endlessly, causing significant losses on each project. Voice of Customer/ Enventives pre-CAD Product Requirements design optimisation system Product Launch Conceptual Design and Manufacturing Tolerance Anlysis By taking variation into account early in the design cycle, Enventive solves the time-pressure crunch Failures inherent in a traditional design workflow. ECN &Tooling Changes Detailed Design and Prototype Testing Validation Tolerance Anlysis Traditional Handoff to Manufacturing Tolerance Failures Analysis ECN &Tooling ChangesEnventive offers a fundamentally new approach: a pre-CAD design optimization system thatincorporates variation analysis into the design optimization process.Enventive combines geometric, mathematic, kinematic, physical modeling with automated variationanalysis, optimization capabilities, and GD&T simulation to help engineers and designers incorporaterobust design principles into their product designs.
How to measure the added value of Enventive ?Due to Enventives ease of use, and to the power of predictive modelling that Enventive allows,users are able to launch their products without ECNs, tooling changes, warranty costs.For that reason, Enventive is recommended as a strategic R&D & product development investment.Our goal is for our customers to realize a return on investment (ROI) within the first year,based on cost savings from using Enventive. This goal is achieved by the vast majority ofEnventive Engineering customers.Enventive users can expect the following types of returns on investment: Better customer satisfaction and confidence, due to robust design methods being applied early in product development . Cost avoidance due to fewer tooling changes, ECNs, and scrap. More innovative designs can be developed with the same number of design and development human resources. Better capacity to manage changes over the lifetime of the product. Better capacity to manage production deviations. More exhaustive costs savings by enlarging tolerances on low impact contributors. Reduction in prototyping efforts. (Enventive acts as a virtual mock-up that includes variation).How does Enventive actually work ?Enventives math-based core allows customersto easily evaluate critical preliminary designdecisions that are otherwise very difficult to analyze.Enventive integrates: - An innovative variational geometry modeller. - A simultaneous equation solver. - An interface with Microsoft Excel.The automated linking and solving between geometry,variables, equations, and Excel spreadsheets allowseasily to define robust nominals and tolerances.System level functional optimization can be carriedout easily. Complex contacts,forces, frictions, deformation, wear, thermaleffects, hydraulic pressure, or any physical aspectsthat can be modeled using equations and curves.Simple stacks including dimensions and GD&T canalso be built very easily, avoiding complicatedmanual calculations or usage of time-consumingCAD-based methods.
What is sensitivity analysis? How can it help in preliminary design?Enventive has a mathematical engine that develops equations to map the relationship between a keyfunctional requirement (Y) and its key design parameters (X) such as dimensions, forces, or types ofother variables. Enventive computes the first partial differential of the mathematical equation todetermine sensitivity values, which represents the ratio between design parameters (X) and the keyfunctional requirement (Y). (For example, if X has a sensitivity of 1.2, it means that if X varies by1.0mm, then Y will change by 1.2mm.) Sensitivities are of strategic importance when designing forrobustness. Due to the ease and speed with which preliminary design scenarios can be evaluated,Enventive allows users to understand the key parameters, predict performance of the functionalrequirement, and minimize sensitivities from the preliminary stage, so they can make well-informeddecisions about tooling and product design.What level of complexity can Enventive handle?Can it be used for 3D problems?Enventive can optimise any design that can bemodeled using sketches in planes, equations andcurves. Our customers have used Enventive tomodel an entire washing machine, gearboxes,automotive latching systems, includingcable losses and the latchs movement indifferent 3D planes. Typical Enventive modelsinclude: discontinuous complex contacts, cables,chains or belts, forces, frictions, wear, thermalexpansion, deformations, profile tolerances, etc.What are the benefits of Enventives integration with Excel?Users can change nominals, tolerances, and Cpvalues in the Excel spreadsheet, and theEnventive model will update automatically.Using the functionality of Excels "Solver" add-in,it is possible to optimize any design parameterso that a design output will reach a given target(+/- n sigmas, worst case, mean, sensitivity).Enventive automatically generates a completelist of contributors for tolerance stack-ups. Thismakes it easy to identify if tolerances may beexpanded for low-impact parameters in order to minimize manufacturing costs. Alan Smith - Enventive Engineering Enventive is a solution implementation rather mobile: +44 (0)7791 024092 than simply a software implementation. On-site email: firstname.lastname@example.org training and on-line web support are tailored so that Enventive users have an easy-to-use and European support email: effective solution for their own designs. email@example.com