Euler Angles Rotation in SAW Modeling
Application ID: 69281
In the surface acoustic waves industry different crystal cuts of piezoelectric materials are used, e.g. 128ᵒ YX LiNbO3, AT&ST quartz, 42ᵒ YX LiTaO3, etc. Direct data isn’t available for all cuts. The standard approach is to use the so-called Euler angle rotation. COMSOL supports it via the Rotated System functionality. When performing such a rotation, one should keep in mind that it’s inherently 3D, therefore some extra manipulations might be needed for different orientations of piezo crystals in geometry.
Here, some special 2D & 3D cases conversion from the default “Lithium Niobate” material to “128 YX cut LiNbO3” are demonstrated on a simple piezoelectric unit cell. Verification is performed for a simple unit cell model aiming to obtain SAW eigenfrequencies and a typical SAW velocity.
案例中展示的此类问题通常可通过以下产品建模:
您可能需要以下相关模块才能创建并运行这个模型,包括:
- COMSOL Multiphysics® 和
- 以下模块之一: 声学模块, MEMS 模块, 或 结构力学模块
建模所需的 COMSOL® 产品组合取决于多种因素,包括边界条件、材料属性、物理场接口及零件库,等等。不同模块可能具有相同的特定功能,详情可以查阅技术规格表,推荐您通过免费的试用许可证来确定满足您的建模需求的正确产品组合。如有任何疑问,欢迎咨询 COMSOL 销售和技术支持团队,我们会为您提供满意的答复。