摘要
在一种面向产品的飞行器结构强度虚拟试验架构下,发展经典材料弹塑性损伤本构和通用有限元技术,并基于Abaqus内置Python软件开发虚拟试验插件工具,创建飞行器舱段结构人机交互虚拟试验平台,形成了对舱段结构承载破坏过程进行高逼真度模拟的虚拟试验能力。采取逐级验模的精度确认技术,开展从试棒到舱段壳体的虚/实试验对比,验证舱段结构虚拟试验的可行性,结果显示:虚拟试验能对舱段结构的承载破坏情况做高逼真度的模拟,对极限承载能力的预示精度达到4.6%。
A product-oriented virtual test framework for structural strength of aircraft bodies is proposed,under which the classical elastic-plastic damage constitutive of materials and general finite element technology are developed,and a human-computer interactive virtual test platform for aircraft cabin structure is created based on the virtual test plug-in tool developed by Abaqus built-in Python software.Using the accurate confirmation technology of step-by-step inspection,the virtual/real test comparison from the specimen to the complex cabin is carried out to verify the feasibility of the virtual test of the cabin structure.The results show that the virtual test can simulate the load-bearing failure of the cabin structure with high fidelity,and the prediction accuracy of the ultimate load-bearing capacity is 4.6%.
作者
王成华
蒋雯霄
杨阳
李磊
WANG Chenghua;JIANG Wenxiao;YANG Yang;LI Lei(Beijing Institute of Space Long March Vehicle,Beijing,100076)
关键词
虚拟试验
舱段结构
承载破坏
测试验证
塑性损伤
virtual test
cabin structure
load-bearing failure
test verification
plastic damage
