输弹机构虚拟样机的校核、验证及故障行为确认

VV&A of Virtual Prototype for Ramming Mechanism

提出了虚拟样机仿真试验中应进行的VV＆A工作。仿真必须经过校核、验证和确认(VV＆A)才能证实其具有一定的可信度,数字仿真在数学模型(方程组)的简化和转化为计算程序的过程中引入的误差会使仿真可信度降低,因而有许多关于VV＆A的讨论和推荐的一些VV＆A方法。基于虚拟样机的仿真与数字仿真有质的不同,如何开展VV＆A工作鲜有提及,实践中一些虚拟样机仿真因未进行VV＆A工作使仿真失去意义。该文案例在虚拟样机仿真的各个阶段都进行了VV＆A工作,,保证了仿真结果的可信度。

This paper provides some research works of the VV&A which should be finished in the modeling and simulation for virtual prototype. Only when the verification, validation and accreditation(VV&A)of modeling and simulation for virtual prototype has been finished, the modeling and simulation are proven to have some creditability. Because the errors of digital simulation produced in the mathematical model simplification and transferring it to computation program will reduce the creditability, there are many comments related to the VV&A, and some recommended methods on the VV&A. There is an essential distinction between the modeling and simulation based on virtual prototype and the digital simulation, however, there are few documents related to the VV&A for virtual prototype. The results of some modeling and simulation in practice are not satisfied because of lacking of the VV&A. The VV&A in each step of the modeling and simulation based on virtual prototype is introduced in the paper in order to ensure the creditability of the modeling and simulation.