技术
- 无人机 - 多旋翼无人机
- 传感器 - 陀螺仪
适用行业
- 航天
- 教育
适用功能
- 采购
- 产品研发
用例
- 智慧校园
- 虚拟原型与产品测试
服务
- 系统集成
关于客户
本案例研究中的客户是威斯康星大学麦迪逊分校工程力学系的一名高年级本科生 Christopher Van Damme。他当时正在从事一个高级设计项目,涉及同轴转子飞行器的设计和分析。具体来说,他的任务是分析复合材料制成的直升机旋翼叶片。为了实现这一目标,他必须采用计算机辅助工程工具来涵盖有关转子静态、模态、频率响应和动态分析的所需研究。威斯康星大学麦迪逊分校以其跨工程学科的核心优势而闻名,反映了其创新历史和巨大的机遇。该学院大力支持跨学科边界的合作结构,包括医疗保健、能源、先进制造和材料创新等部门。
挑战
该案例研究围绕威斯康星大学麦迪逊分校工程力学系高年级本科生 Christopher Van Damme 承担的一个高级设计项目展开。该项目涉及同轴旋翼飞行器的设计和分析,特别关注复合材料制造的直升机旋翼叶片。旋翼叶片是直升机的关键部件,提供推力、升力并实现机动。现代直升机使用复合材料制成的旋翼叶片,因其具有出色的强度重量比、损伤容限和疲劳寿命。然而,使用分析方法或降阶模型计算复合材料具有挑战性。因此,范达姆必须应用合适的计算机辅助工程 (CAE) 工具来完成所需的研究,包括转子的静态、模态、频率响应和动态分析。
解决方案
为了分析复合材料制成的转子叶片,Van Damme 使用了 Altair 的 HyperWorks 套件。转子叶片最初是在 3D CAD 软件包中设计的,然后导入到 HyperMesh 中以执行几何编辑和网格生成等预处理任务。 HyperMesh 促进了快速、简化的流程,实现了完整的 3D 有限元建模,以准确表示转子叶片的响应。旋翼轮毂和旋翼叶片对飞机的性能有着至关重要的影响,在分析中尤其令人感兴趣。 3D CAD 模型作为单独的实体零件导入 HyperMesh,转换为用于壳网格划分的曲面,并为复合结构分析做好准备。转子叶片的根部(应力最高的地方)被网格划分为 3D 实体,代表穿过翼型厚度的连续层铺层的材料特性。空气动力载荷施加在沿转子长度的离散点上,以产生升力和阻力。该设计采用铰接或刚性连接,叶片根部受两个钛制凸耳约束,充当模型内的约束。
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