基于 NX 的汽车覆盖件可成形性分析系统

基于 NX 平台,构建了参数化关联驱动的汽车覆盖件可成形性分析系统 QFW( Quick Forming Wizard) 。 通过自定义数据框架和关联存储技术,建立了合理的驱动更新机制,实现了 CAE 仿真过程参数化更新。 系统直接在 NX 产品模型中进行 CAE 建模,将 CAE 分析直接与产品进行参数关联,不用反复建模便可实现产品数学模型和工艺参数更新后的模拟。 采用改进的有限元逆算法,能快速预测覆盖件产品的整体可成形性和局部翻边区域可成形性,同时计算出修边线尺寸。 最后通过实例验证了模拟结果的准确性以及参数化更新的便捷性。

Forming Analysis System for Automobile Panel Based on NX Platform

Quick forming wizard ( QFW) , a parameterized product formability analysis system for automobile panel, was developed based on NX platform. With self-defined data structure and associative storage, a reasonable driven updating rule was set up, and the CAE simulation process parameterized updating was realized. CAE modeling was created directly in the product model, thus the product data was directly associated with CAE modeling, and simulation could be renewed by updating the product model or the process parameters instead of repeating modeling. Using the updated FE inverse approach, the system could predict the formability of both the whole product and the flanging area, and the trimming line was calculated simultaneously. In the end, examples were demonstrated to conform the accuracy of the simulation result and the convenience of the parameterized updating.