Entwicklung einer FEM-basierten Methode zur Gestaltung von Sicken für biegebeanspruchte Leitstützstrukturen im Konstruktionsprozess. Development of a FEM-based method for the design of bead patterns for channel and support structures under bending load in the design process
Entwicklung einer FEM-basierten Methode zur Gestaltung von Sicken für biegebeanspruchte Leitstützstrukturen im Konstruktionsprozess. Development of a FEM-based method for the design of bead patterns for channel and support structures under bending load in the design process
复制标题
开发基于有限元的方法，用于在设计过程中设计弯曲载荷下的通道和支撑结构的压条图案
DOI：
10.5445/ir/1000002726
复制
发表时间：
2005
影响因子：
3.9
通讯作者：
D. Emmrich
中科院分区：
文献类型：
--
作者：
D. Emmrich
对机械部件设计的要求不断提高。壳体结构相对于其重量具有高刚度，为这一挑战提供了巨大的潜力。然而，壳体结构的浅区域有一个致命弱点：它们具有非常低的弯曲刚度。一个行之有效的，往往是廉价和容易的补救措施，这种弱点是通道浮雕到结构，所谓的珠模式。这些加强筋有效地增加了壳体结构的内力。尽管这是一个非常容易且众所周知的原理，但即使对于相对简单的几何形状和负载条件，也不可能仅凭直觉确定胎圈图案的理想取向。这项工作给出了一个概述的方法和规则可用于珠设计到目前为止。从基本的调查和机械观察，最优性标准和设计规则的珠模式已被导出。在此基础上，提出了一种珠网壳结构的设计方法，并通过实例从理论和实践两方面进行了论证。该方法的重点是易于在实际中应用。应用工程师将了解珠图案的原理以及如何使用FE方法设计有效的图案，无论是否使用其他工具。
The demands on the design of mechanical components are constantly increasing. Shell structures, which have high stiffness with respect to their weight, offer a large potential for this challenge. However, shallow areas of shell structures have a Achilles' heel: they have a very low bending stiffness. A proven and often cheap and easy remedy for this weakness are channels embossed into the structure, so called bead patterns. These beads incease the bending moment of interia of shell structures very efficiently. Even though, this is a very easy and well known principle, the determination of an ideal orientation of the bead pattern is even for relatively simple geometries and loading conditions not possible soley by intuition. This work gives an overview over the methods and rules available for bead design so far. From fundamental investigations and mechanical observations, optimality criteria and design rules for bead patterns have been derived. With these results, a method for the design of shell structures with bead patterns is developed and demonstrated on examples from both, theory and practice. Focus of the method is the easy application in practice. The applying engineer gets to know the principles of bead patterns and how to use the FE-Method to design efficient patterns, with and without additional tools.