By Wood, Paul K. C.; Naskar, Kinsuk; De, Sadhan K.
The purpose of this publication is to supply directions to generate tensile pressure fee try info for ferrous and non-ferrous sheet metals to be used in finite aspect dependent automobile crash simulation instruments. in particular, size of the power hardening in a sheet fabric because of pressure expense trying out utilizing a excessive pace servo hydraulic try laptop. also, to supply instructions to approach uncooked try out info, healthy fabric version and structure this information for software in crash simulation instruments. it isn't in the scope of those suggestions to recommend a cloth version to slot to pressure price attempt effects, even though helpful versions are referenced. relatively to provide advice at the mistakes allowance in becoming version to check effects. those instructions are anticipated to have broader program within the shipping region.
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Extra resources for Strain Rate Testing of Metallic Materials and their Modelling for use in CAE based Automotive Crash Simulation Tools : (Recommendations & Procedures)
A. Philips, The effect of strain rate and temperature on the resistance of aluminium, copper and steel to compression, Journal of the Institute of Metals, 1954, 8, 3, 80. M. Cook, True stress-strain curves for steel in compression at high temperatures and strain rates in Proceedings of an IMechE Conference on Properties of Materials at High Rates of Strain, London, UK, 1957, 86. 6) P. van Liempt, Work hardening and structural geometry of metals, Journal of Materials Processing Technology, 1994, 45, 1–14, 459.
Whilst other models listed have a physical basis which attempts to couple the effects of strain rate and heat that develops with plastic deformation in a metal structure, for example through dislocation theory and thermodynamic considerations. They still ultimately provide a mathematical description of the material under conditions of special interest, and the inputs to the model still require strain rate and temperature testing. 1) A. R. Klepaczko, Shear testing of a sheet steel at wide range of strain rates and a constitutive relation with strain-rate and temperature dependence of the ﬂow sheet, International Journal of Plasticity, 2001, 17, 1, 87.
Furthermore the DLC time constant appropriate for measurements at different test speeds is set to match the duration of a test. The DLC will be calibrated annually and at shorter intervals depending on usage of the machine. All calibration ﬁles used for different load range settings must be checked immediately following DLC calibration. The natural frequency of DLC must be as high as possible for dynamic force measurement. The Kistler type DLC used in the IARC machine has a natural frequency of around 30 kHz in the direction of load application.
Strain Rate Testing of Metallic Materials and their Modelling for use in CAE based Automotive Crash Simulation Tools : (Recommendations & Procedures) by Wood, Paul K. C.; Naskar, Kinsuk; De, Sadhan K.