曲面离散载荷在仿真分析中的施加方法  

Method for Imposing Discrete Loads on Curved Surface in Simulation Analysis

作　　者：徐新栋[1,2] 李建辰[1,2] 曹小娟[1] 龚平 

机构地区：[1]中国船舶重工集团公司第705研究所,陕西西安710075 [2]水下信息与控制重点实验室,陕西西安710075 [3]Abaqus北京代表处,北京100025

出　　处：《鱼雷技术》2011年第4期246-249,254,共5页Torpedo Technology

摘　　要：针对有限元仿真分析中曲面上大量离散分布载荷施加困难的问题,提出了基于曲线拟合和线性插值的曲面分区拟合法,应用于由单调曲线回转而成的轴对称曲面上,求出载荷值沿各曲面分区的函数表达式,并通过表达式进行快速有效加载,提高了有限元前处理的效率。在模型风洞试验仿真分析中对该方法进行了应用验证,结果表明,该方法简单有效且能保证较高的精度。To solve the problem of imposing a mass of discretely distributed loads on curved surface, and improve the efficiency and quality of finite element method （FEM） analysis, a function fitting method of curved surface subarea based on curve polynomial fitting and linear interpolation is proposed. With axisymmetric curved surface revolved by a monotonous curve, the functions of the discrete loads along the surface subareas are derived, then the loads are imposed on the whole curved surface through the functions for simulation analysis. Hence, the efficiency of pre-process for the FEM is enhanced. The simulation of model wind tunnel test indicates that this method is simple and effective with high precision.

关 键 词：有限元方法 离散分布载荷 曲面分区拟合法 仿真 

分 类 号：TJ631.2[兵器科学与技术—武器系统与运用工程] TM46[电气工程—电器]