摘要：Topology optimization is a powerful design approach that is used to determine the optimal topology in order to obtain the desired functional performance. It has been widely used to improve structural performance in engineering fields such as in the aerospace and automobile industries. However, some gaps still exist between topology optimization and engineering application, which significantly hinder the application of topology optimization. One of these gaps is how to interpret topology results, especially those obtained using the density framework, into parametric computer-aided design (CAD) models that are ready for subsequent shape optimization and manufacturing. In this paper, a new method for interpreting topology optimization results into stereolithography (STL) models and parametric CAD models is proposed. First, we extract the skeleton of the topology optimization result in order to ensure shape preservation and use a filtering method to ensure characteristics preservation. After this process, the distribution of the nodes in the boundary of the topology optimization result is denser, which will benefit the subsequent curve fitting. Using the curvature and the derivative of curvature of the uniform B-spline curve, an adaptive B-spline fitting method is proposed in order to obtain a parametric CAD model with the fewest control points meeting the requirement of the fitting error. A case study is presented to provide a detailed description of the proposed method, and two more examples are shown to demonstrate the validity and versatility of the proposed method.

摘要：察觉到技术的纤维布拉格栅栏(FBG ) 被用来动态地监视铁路开关机器杆的多重参数，包括装载并且锁住装载抵抗的力量，和状态的运动，方向和数量的时间。这份报纸论述联机的铁路开关杆紧张的设计和实现为一台西门子 S700K 开关机器基于 FBG stress-sensibilized 监视器监视系统。戒指形状 FBG 紧张计量器和 stress-sensibilized 方法显著地增加了监视敏感。安装途径在铁路申请改编了严厉环境。监视结果显示出高敏感和这个监视系统的高可靠性。这应用提供能满足在这个国家监视超过 100,000 台开关机器的要求的铁路开关状况的一个长期、联机的检测方法。