典型文献
A bayesian optimisation methodology for the inverse derivation of viscoplasticity model constants in high strain-rate simulations
文献摘要：
We present an inverse methodology for deriving viscoplasticity constitutive model parameters for use in explicit finite element simulations of dynamic processes using functional experiments,i.e.,those which provide value beyond that of constitutive model development.The developed methodology utilises Bayesian optimisation to minimise the error between experimental measurements and numerical sim-ulations performed in LS-DYNA.We demonstrate the optimisation methodology using high hardness armour steels across three types of experiments that induce a wide range of loading conditions:ballistic penetration,rod-on-anvil,and near-field blast deformation.By utilising such a broad range of conditions for the optimisation,the resulting constitutive model parameters are generalised,i.e.,applicable across the range of loading conditions encompassed the by those experiments(e.g.,stress states,plastic strain magnitudes,strain rates,etc.).Model constants identified using this methodology are demonstrated to provide a generalisable model with superior predictive accuracy than those derived from conventional mechanical characterisation experiments or optimised from a single experimental condition.
文献关键词：
中图分类号：
作者姓名：
Shannon Ryan;Julian Berk;Santu Rana;Brodie McDonald;Svetha Venkatesh
作者机构：
Applied Artificial Intelligence Institute(A2I2),Deakin University,75 Pigdons Rd,Waurn Ponds,VIC,3216,Australia;Defence Science and Technology Group,506 Lorimer Street,Fishermans Bend,VIC,3207,Australia
文献出处：
引用格式：
[1]Shannon Ryan;Julian Berk;Santu Rana;Brodie McDonald;Svetha Venkatesh-.A bayesian optimisation methodology for the inverse derivation of viscoplasticity model constants in high strain-rate simulations)[J].防务技术,2022(09):1563-1577
A类：
viscoplasticity,utilises,armour,generalised,generalisable
B类：
bayesian,optimisation,methodology,inverse,derivation,model,constants,high,strain,simulations,We,present,deriving,constitutive,parameters,use,explicit,finite,element,dynamic,processes,using,functional,experiments,those,which,provide,value,beyond,that,development,developed,Bayesian,minimise,error,between,experimental,measurements,numerical,performed,LS,DYNA,hardness,steels,across,three,types,induce,wide,range,loading,conditions,ballistic,penetration,rod,anvil,near,field,blast,deformation,By,utilising,such,broad,resulting,are,applicable,encompassed,by,stress,states,magnitudes,rates,etc,Model,identified,this,demonstrated,superior,predictive,accuracy,than,derived,from,conventional,mechanical,characterisation,optimised,single
AB值：
0.563249
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