原文传递
DYCAST A finite element program for the crash analysis of structures
| 题名： | DYCAST A finite element program for the crash analysis of structures |
| 作者： | Pifko, A. B.; Winter, R.; Ogilvie, P. |
| 关键词： | structure；element；analysis；finite；program；cast；rash；cras；deform；convergence |
| 摘要： | DYCAST is a nonlinear structural dynamic finite element computer code developed for crash simulation. The element library contains stringers, beams, membrane skin triangles, plate bending triangles and spring elements. Changing stiffnesses in the structure are accounted for by plasticity and very large deflections. Material nonlinearities are accommodated by one of three options elastic-perfectly plastic, elastic-linear hardening plastic, or elastic-nonlinear hardening plastic of the Ramberg-Osgood type. Geometric nonlinearities are handled in an updated Lagrangian formulation by reforming the structure into its deformed shape after small time increments while accumulating deformations, strains, and forces. The nonlinearities due to combined loadings are maintained, and stiffness variation due to structural failures are computed. Numerical time integrators available are fixed-step central difference, modified Adams, Newmark-beta, and Wilson-theta. The last three have a variable time step capability, which is controlled internally by a solution convergence error measure. Other features include multiple time-load history tables to subject the structure to time dependent loading gravity loading initial pitch, roll, yaw, and translation of the structural model with respect to the global system a bandwidth optimizer as a pre-processor and deformed plots and graphics as post-processors. |
| 报告类型： | 科技报告 |
相关文献
- Hybrid Soft Soil Tire Model (HSSTM). Part 1: Tire Material and Structure Modeling.
- BEAM: A Finite Element Program for the Collapse Analysis of Vehicle Structures.
- Transient analysis techniques in performing impact and crash dynamic studies
- Delamination Modeling of Composites for Improved Crash Analysis
- Integration of Computational Geometry, Finite Element, and Multibody System Algorithms for the Development of New Computational Methodology for High- Fidelity Vehicle Systems Modeling and Simulation.
- VECVEV: VEhicle Crash Virtual Environment Visualizer; Final rept
检索历史
应用推荐
