VIP20
本课程属于：001-LS-DYNA Automotive Crash Simulation Engineering English Technical Courses · 共 20 门相关课程，组合学习更完整。
查看所属VIP全部课程 →
← 返回所属目录 咨询 / 购买

LS-DYNA Steering Column Collapse and Impact Safety

30 Chapters
View Course Samples Online
01
Steering column impact safety fundamentals
occupant protection requirements, regulatory and rating tests, and the role of controlled collapse.
Steeringoccupant
02
Steering column architecture
column tube, jacket, shaft, bearings, mounting brackets, tilt and telescoping mechanisms, and energy-absorbing elements.
Steeringarchitecture
03
Collapse kinematics and load paths
axial compression, bending, torsion, friction, and deformation modes under frontal impact.
Collapsekinematics
04
Material modeling for steering column components
steel, aluminum, magnesium, plastics, and strain-rate-sensitive constitutive models in LS-DYNA.
Materialmodeling
05
LS-DYNA model setup for a steering column assembly
geometry preparation, meshing strategies, element types, and contact definitions.
LS-DYNAsteering
06
Boundary conditions and loading
sled test replication, impactor setup, occupant loading, and prescribed motion versus force application.
Boundaryconditions
07
Implicit versus explicit solvers for column collapse
time step control, mass scaling, and stability considerations.
Implicitexplicit
08
Contact mechanics in column collapse
self-contact, surface-to-surface, tied contacts, and friction modeling for telescoping and sliding interfaces.
mechanicscollapse
09
Energy absorption mechanisms
plastic deformation, folding, splitting, friction, and spring or wire bending energy absorbers.
absorptionmechanisms
10
Modeling of steering column collapse triggers
notches, grooves, dimples, and geometric imperfections to control initiation.
Modelingsteering
11
Validation of column models
component-level tests, quasi-static and dynamic experiments, and correlation metrics.
Validationcomponent-level
12
Occupant interaction modeling
driver airbag, seat belt, and steering wheel contact with the Hybrid III or THOR dummy.
Occupantinteraction
13
LS-DYNA keyword setup for column impact
*MAT, *SECTION, *CONTACT, *BOUNDARY, *LOAD, and *DATABASE cards.
LS-DYNAMAT
14
Simulation of steering column collapse in full frontal impact
vehicle model integration, subsystem coupling, and boundary condition transfer.
Simulationsteering
15
Parametric studies for collapse performance
tube thickness, material grade, trigger geometry, and mounting stiffness.
Parametriccollapse
16
Design of experiments and optimization
DOE, response surface, and LS-OPT for steering column energy absorption.
experimentsoptimization
17
Failure modeling
ductile damage, shear fracture, element deletion, and their influence on collapse force and stroke.
modelingfracture
18
Mesh sensitivity and convergence
element size, hourglass control, and mesh regularization for collapse simulations.
sensitivityconvergence
19
Strain rate effects
Cowper-Symonds, Johnson-Cook, and tabulated rate-dependent plasticity for column materials.
Cowper-SymondsJohnson-Cook
20
Thermal and manufacturing effects
residual stresses, welds, and joints in as-built column performance.
manufacturingresidual
21
Post-processing of column collapse
force-displacement curves, energy balance, intrusion, and occupant injury criteria.
Post-processingcollapse
22
Correlation with physical tests
sled tests, drop tower tests, and quasi-static compression for model validation.
Correlationphysical
23
Robustness and variability
probabilistic analysis, tolerance effects, and scatter in collapse behavior.
Robustnessvariability
24
Lightweight design and material substitution
high-strength steel, aluminum, and composite columns in LS-DYNA.
Lightweightmaterial
25
Multi-objective optimization
balancing collapse force, weight, cost, and occupant safety.
Multi-objectiveoptimization
26
Advanced energy absorbers
wire bending, rolling, inversion tubes, and their LS-DYNA modeling.
Advancedabsorbers
27
Steering column integration with instrument panel and body structure
mounting stiffness and crash pulse effects.
Steeringintegration
28
Case study
simulation of a production steering column in a 56 km/h frontal barrier impact.
simulationproduction
29
Case study
design and validation of a collapsible steering column for a battery electric vehicle.
validationcollapsible
30
Future trends and emerging methods
machine learning for crashworthiness, digital twins, and real-time simulation.
emergingcrashworthiness