Page 23 - Automotive Solution for Automotive

Reducing Weight

Increasing the Accuracy of Press Forming Simulation to
Improve Development Efficiency

– Improving Prediction Accuracy for Springback and Other Factors –

In order to reduce the weight of automobiles, it is essential to use pressed parts made
of light-weight materials with poor workability, such as high tensile steel and
Previous Current Next-Generation
aluminum alloys. Repeatedly modifying dies to achieve the target shape is not only Improve simulation
Press Simulation accuracy!
increases costs, but also can cause longer development periods. Therefore, users are forming
Press forming · Biaxial tensile tests
· Bauschinger effect
starting to try using simulation to predict forming problems in advance for the purpose Evaluate · Young's modulus
plasticity strain
of decreasing the necessity of actual sample evaluation. Consequently, in an effort to shape Evaluate shape dependence
Examples of Automotive Testing and Evaluation increase simulation accuracy, there is demand for obtaining new types of working
property data, such as biaxial tensile testing and Bauschinger effect measurement data. Design technique change = Cost reduction progress Precision
Universal Testing Machine
AGX-V Series
Evaluating Biaxial Tensile Strength
Data Used for Simulation
Actually, I want to use biaxial
Reducing Weight Uniaxial test data Biaxial test data Solves this problem! tensile testing,
Problem: Solution: Biaxial tensile testing but such systems are too big and
Next-
Increasing the Accuracy of Press Forming Simulation to Improve Development Efficiency 23 Current Discrepancies occur in predictions due Generation Loads are applied in two axial directions is more easily available! expensive.
to differences from actual loading during measurements to more closely I wish there was a simpler way
Improving Simulation Accuracy Rate of High-Tensile Steel Sheet Press Forming Simulations that Consider the Bauschinger Effect 24 status. resemble actual loading conditions. to perform biaxial tensile testing!
Verification and Validation of Simulation Results for Uniaxial Tensile Testing of Composite Materials 25
Slits
Improving CAE Reliability for Composite Materials 26 Slits in the arms that apply force to the center area minimize 1200
mutual interference between X and Y axes. 1000
Clarifying the Fracture Mechanism of Composite Materials 28 ρ
Strain Gauge 800 ε 0
Strength Evaluation Technique Helps Improve Accuracy of CAE Analysis for Composite Materials 29 0.002
Two strain gauges are 600 0.005
Evaluating the Physical Properties of CFRPs Using SPMs 30 applied, in X and Y δγ N/mm 2 0.01
directions. Revisions to 400 0.02
Dynamic Tensile Testing Using a Three-Dimensional DIC Analysis System 32 the standards are
expected to specify the 200
measurement
positions. 0 δχ N/mm 2
ISO standards are currently being established. 0 200 400 600 800 1000 1200
Comfort/Convenience
Evaluating the Performance of Suspension Parts 33 · Biaxial tensile testing is possible by simply attaching the jig to a testing machine.
Measuring VOCs in Automobile Cabins and Parts 34 · Tensile force ratios can be varied by swapping arm parts.
Visualizing the Loads on Drivers when Driving 35 · Loading unit easily retracts upward for easy sample replacement.

Motorization Evaluating Bauschinger Effects and Young's Modulus Plasticity Strain Dependence
Multifaceted Evaluation of Lithium-Ion Rechargeable Batteries 36 in Thin Flat Materials by In-Plane Reversing Load Testing
Evaluation for Ensuring Gas Supply Stability and Long-Term Durability of Hydrogen Stations 37
Simulation of Springback
Evaluation of Compositional Distributions in Neodymium Magnets Used in Electric Motors 38
Uniaxial test data Incorporate Bauschinger effect
Problem: Solution:
Next-
Current Predication accuracy is low for forming Generation More accurate springback prediction
Autonomous Driving processes that involve complicated can be provided, which may lead to
steps, due to the Bauschinger effect. simulation accuracy improvement.
Evaluation of Sensor Materials for Autonomous Driving 39
A hydraulic mechanism In three consecutive Straightening pressure
is used to straighten tension-compression cycles, 50000 To prevent buckling, a force is
Internal Combustion Engines out wrinkles. the Bauschinger effect 40000 applied hydraulically in the
results in a lower yield point
30000
for second (B) and 20000 A sample thickness direction.
Evaluating Parts and Materials for Increasing the Temperature and Pressure of Engines and Exhaust Systems to Improve Fuel Efficiency 40 subsequent cycles than the 10000
first cycle (A). However, this Test Force -0.5 -10000 0 0 0.5 1 1.5 2 2.5 B 3 3.5 Sinking Comb
simulation not only
An extensometer can incorporates the Bauschinger -20000 Fastened to upper and lower grips.
be mounted. effect, but also shows good -30000 The respective portions mesh
Failure Analysis and Material Control reproducibility in the second -40000 together to efficiently transfer
-50000
and third cycle curves. Displacement (mm) straightening pressure even when
Failure Analysis of Surface-hardened Gears 41 the sample deforms.
Multifaceted Evaluation of Plastic Degradation 42
· In-plane reversing load testing of thin samples is possible by simply attaching the jig to a testing machine.
RoHS Directive Compliant Screening System for Phthalate Esters 43
· Straightening pressure prevents buckling during compression and enables compression testing in the length direction of thin materials.
Compliance with ISO 6892 Metallic Material Tensile Testing Standards 44
· Accurate sample elongation can be measured easily by attaching an extensometer.
Count on Shimadzu for Satisfying Plastic Testing Standards 45
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