Posts Tagged ‘crash’
|Giuseppe Resta - Business Development Manager, Global Automotive|
It doesn’t seem so long ago that passenger safety and vehicle crashworthiness were the battleground where automakers differentiated their products. Now, as many OEMs have created product development systems that rely on a CAE-driven strategy to deliver excellent passive safety performance, it appears to have taken a backseat to miles-per-gallon. Almost every car commercial touts greater fuel efficiency and seeks to validate the manufacturer’s environmental credentials.
Both safety and gas mileage advances have been pushed by regulation and pulled by consumer demand. Now that the United States has set the 54.5 mpg Corporate Average Fuel Efficiency (CAFE) standard for 2025 and lower CO2 emissions have been mandated in Europe, we are entering a new era of increased challenge that could lead to significant change in the way cars are designed and constructed. OEMs and suppliers are reviewing every component and considering the technologies available to meet these new demanding standards, including investment in engineered plastic and carbon-fiber-reinforced plastics (CFRP) that offer high stiffness-to-weight and strength-to-weight ratios.
|Erwan BeauchesneSoftware Development Manager, Manufacturing Technology at Altair|
Coupling simulations from different domains is becoming increasingly important, considering the evolution of CAE toward multi-physics problems. As an example, utilizing residual stress/strain as well as thinning information from metal-forming simulation is gaining rapid acceptance in the structural CAE community. Most of the time, components of full-car crash models are defined independently from any residual stresses and strains, and thicknesses are considered as nominal, whereas a lot of these ones have been manufactured thru stamping or bending processes.
To neglect these initial conditions leads to inaccurately capture the material response under structural loading, which is especially true with advanced high strength materials, which are gaining more usage for weight reduction.
Similar needs can be seen in a variety of other simulation domains. To transfer data between CFD and structural CAE is also realized in aircraft wing design process. CFD analysis is used to evaluate the wind pressure, which has to be passed on to the structural analysis model to evaluate stresses. However, the mesh for CFD and structural analysis are different so that it is necessary to map the data via interpolation between the two meshes. Similarly, in electronic cooling systems, heat transfer analysis often is followed by a structural analysis, which uses a different mesh, to evaluate distortions.
We are seeing a growing number of customers coupling their simulation results with structural CAE making the development of robust, efficient and accurate mapping tools very important.
Tags: aerospace, automotive, computational fluid dynamics, crash, defense, design, finite element, HyperCrash, HyperMesh, HyperView, multi-body, optimization, OptiStruct, RADIOSS, structural, topology, vehicle
Posted in Events, Upcoming Events | No Comments »
Preprocessing for RADIOSS Crash Analysis
This is an introductory course designed to teach engineers to use HyperCrash to rapidly create, manage crash and safety models. This is a one-day, instructor led, course includes:
- Managing Tree Hierarchy
- Materials & Properties Creation and Allocation
- Element Modifications
- Merging & Connecting Sub-Systems
- Loadcase & Interfaces Definition
- Quality Checks
- Usage of Replace Feature
- Time History Selection
- Cleaning & Exporting the Model
- Safety: Dummy Positioner, Seat Belt Generator
By Darius Fadanelli
Director – Customer Support
Engineering analysts are continually being asked to get more done in less time. In addition, they are overwhelmed with learning to use many individual tools that claim the ability to perform a specific task or component of a job. This further drives the need for one integrated suite of tools that can use the same licensing system to complete a process from start to finish. To address this need, Altair has implemented many complete processes that are flexible and configurable with the Altair HyperWorks Suite.
Tags: 24 hours, analysis, automation, automotive, BatchMesher, CAD, CAD2Crash, compute cloud, crash, HyperCrash, HyperMesh, HyperView, PBS, Process Manager, RADIOSS, safety
Posted in Feature Articles | No Comments »
HyperCrash™ is a highly tuned pre-processing technology specifically designed to automate the creation of high-fidelity models for crash analysis and safety evaluation. Through a comprehensive and procedure-oriented toolset, HyperCrash improves and simplifies complex problems of creating a quality crash model.
- Reduce Model Assembly and Load Case Set-up Time
- Easy Input Deck Conversion
- Fast, High-Quality Model Creation and Set-up
- Manage and automate the steps to create crash and safety performance models
- Database-Driven Part Replacement
- Fast and User-Friendly Model Building Environment