LiToForm金属成形CAE软件
本文摘要（由AI生成）：
文章主要介绍了LiToForm金属板料成形CAE软件，该软件可用于汽车、航空、航天、舰船等领域，涉及拉伸/冲压、多工步等工艺，以及主应力分布的FLC安全范围、起皱、零件损伤、残余应力计算、弹性回弹的模具补偿、零件附加面优化等方面的应用。LiToForm将推出增量法、逆法和拟逆法三种可选方法，其中拟逆法结合了增量法的高精度和逆法的高效两个优点，为用户提供第三个选择。此外，文章还介绍了工业应用背景、国外商用软件、挤出成形数值仿真、锻压、冲压等方面的内容。
LiToForm金属成形CAE软件基于励颐拓仿真软件开发共性平台LiToDesk开发，在通用求解器LiToSim的基础上，考虑了金属成形特有算法，形成了针对金属成形领域的定制化CAE软件。 LiToForm将包含板料成形和体积成形两大模块。 
包含但是不限于：汽车，航空，航天，舰船等。通常的工艺有拉伸/冲压，多工步等。涉及到的应用有：主应力分布的FLC安全范围，起皱，零件损伤，残余应力计算，弹性回弹的模具补偿，零件附加面优化等方面。
多工步成形
损伤模拟
LiToForm将在LiToSim通用软件的基础上，开发出一款适用于金属板料成形的专用CAE软件。LiToForm将与LiToSim的前后处理器无缝衔接，继承LiToSim友好和高效的用户界面。商用金属板料成形CAE软件一般基于两种算法：有限元增量法和逆法。增量法从初始板料形状通过大量的小步正向计算到最终形状。其模拟精度相对较高，在模具正式生产前有相对可靠的应力应变等数值模拟参考。基于有限元增量法的国外商用板料成形的CAE软件主要有AUTOFORM，DYNAFORM，STAMPACK等。逆法从最终形状通过一步反算初始板料形状。由于缺少中间步骤，其应力模拟精度比增量法低，应变精度没有下降太多。它优点是快速，能应用于快速优化，逆法对快速模具设计有高效的指导作用。缺点是缺少中间步骤，不能模拟与变形历史相关的损伤。国外基于逆法的商用软件主要有AUTOFORM/Onestep等。LiToForm将推出增量法，逆法和拟逆法三种可选方法。拟逆法结合了增量法的高精度和逆法的高效两个优点，为用户提供第三个选择。
体积成形零件应用非常广泛，包含但是不限于：紧固件、机械、仪表、电器、轻工、宇航、船舶、军工等工业。主要有Deform，Forge III，QForm等，这些软件都是基于增量法。
LiToForm将推出增量法和拟逆法两种可选方法，使精确性和快速性得到兼顾。快速性的选择更利于软件应用于优化，使高效模具设计成为可能。比如中间预成形坯形状优化。
金属成形是一个强非线性问题，同时涉及到材料非线性、几何非线性和接触状态非线性。励颐拓团队在各个方面都做了长期的技术积累，结合通用CAE软件LiToSim开发所累积的经验，着手打造金属成形专用仿真软件，与制造业用户建立长期合作关系。
励颐拓团队秉承独立自主路线，致力推进国产CAE软件发展，打造国产自主可控的CAE软件。
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重庆励颐拓软件有限公司，于2018年7月6日成立，总部位于两江新区中瑞（重庆两江）产业园，在法国巴黎、上海、青岛设有研发中心，同时正在筹备设立成都研发中心。
公司由首席科学家冯志强教授领衔，拥有两院院士及国内外顶级专家组成的顾问团队，并与国内外多个科研团队建立密切合作；公司研发人员占比超过90%，且均为硕士及以上学历。
公司基于冯志强教授团队在理论、模型、算法、软件架构等方面三十余年的技术积累，致力于开发完全自主可控、具有国际先进水平的高端通用CAE软件LiToSim, 并协助不同领域用户开发服务于其核心产品的专用仿真软件，为研究成果积累、行业知识沉淀、CAE人才培养及产品自主创新提供良好的生态环境，为共同打造国产自主可控CAE软件贡献力量。
