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时间：2021年x月x日
书山有路勤为径，学海无涯苦作舟
页码：第页 共8页
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Chapter 3 Material model and material characterization of automotive aluminium alloy 5052H34
preface
The basic property of material decides the use function of the the research of car crashes and large deformation of key components,the key point of solving the problem is to build corresponding physics-math model in order to acquire the specific material for the automotive aluminium alloy in our research ,we need to consider the response characteristic of the material machanism on condition of real impact (such as dynamic loading,high-stress condition,including primary defects or damage,etc) .By this way, numerous performance test and full-size componnet crash test need to be conducted ,which would exhaust great labor power and physical resources,but the result is still the limited discret data obtain by the experiment,it can hardly cover the space of all solution of the some extreme condition such as shearing stress condtion, high strain rate(ε－1≥2×102),it hard to predict its machanism response. Therefore,this model we built has its comparatively large combine with numerical simulations,it can expand the space of the model effectively,while obtain complete material parameters