Abstract

The microstructural characteristics of original textured tungsten samples are certified. The free surface velocities of the samples were measured in shock-wave experiments. The dynamic yield strength and spall strength values are determined for samples of various thicknesses. Mathematical modeling of the performed experiments is carried out within the hydrocode algorithm, in which original equations of state, an elastoplastic model, and an instantaneous spall approximation are used. The reliability and predictive capabilities of simulation of the physical and mechanical behavior of textured tungsten under conditions of shock-wave compression and high-speed tension are discussed.

中文翻译：

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纹理钨样品的冲击波载荷和剥落断裂：实验和模拟

摘要

原始纹理钨样品的微观结构特征经过认证。在冲击波实验中测量样品的自由表面速度。动态屈服强度和剥落强度值是针对不同厚度的样品确定的。所执行实验的数学建模是在水文算法中进行的，其中使用了原始状态方程、弹塑性模型和瞬时剥落近似。讨论了在冲击波压缩和高速拉伸条件下织构钨的物理和机械行为模拟的可靠性和预测能力。