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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.1; 20051026-28; Nanjing(CN) >The B3 Spline Strip Element Method Based on Genetic Algorithm and Its Simulation
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The B3 Spline Strip Element Method Based on Genetic Algorithm and Its Simulation

机译：基于遗传算法的B3样条带单元法及其仿真

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摘要

Based on the plastic deformation theory and the genetic algorithm, the B_3 spline function stream surface strip element method is put forward to analyze and simulate the three-dimensional deformation of strip and plate. Along metal flow traces, the rolling deformation zone is divided into numbers of stream surface (curved surface) strip elements. For the convenience of numerical analysis and computation, the stream surface strip elements are mapped onto the plane strip elements, the transverse distributions of the transverse displacement and the altitudinal displacement of metal are respectively expressed as the B_3 spline functions, and the altitudinal distributions of them are fitted by the quadratic curve, and the longitudinal distributions of the thickness in the entry or the exit is expressed as the B_3 spline function too. The correct exit displacements that make the minimum of the total power are optimized by the floating point coding genetic algorithm, so the precise three-dimensional analyze and calculation can be realized for analyzing three-dimensional distributions of the non-uniform deformation and stress of the metal. The instances of simulation show the results are steady and reliable.
机译：基于塑性变形理论和遗传算法，提出了B_3样条函数流表面条形单元法，对带板的三维变形进行了分析和模拟。沿金属流动轨迹，轧制变形区被划分为多个流表面（弯曲表面）带状元素。为了方便数值分析和计算，将流表面带状单元映射到平面带状单元上，金属的横向位移和高度位移的横向分布分别表示为B_3样条函数，并且它们的高度分布由二次曲线拟合，并且入口或出口处的厚度的纵向分布也表示为B_3样条函数。通过浮点编码遗传算法优化了使总功率最小的正确出口位移，因此可以实现精确的三维分析和计算，以分析三维结构的非均匀变形和应力的三维分布。金属。仿真实例表明结果稳定可靠。

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