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首页> 外文会议>International Conference on Dynamics and Vibroacoustics of Machines >Construction diagnostics of the aircraft parts on the basis of the energy method and the stress-state stiffness criterion
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Construction diagnostics of the aircraft parts on the basis of the energy method and the stress-state stiffness criterion

机译：基于能量法和应力 - 状态刚度标准的飞机部件的施工诊断

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The analysis of the stress-strain state on the basis of equivalent stress and the theories of durability is used for diagnostics of parts at present moment in the typical strength calculations. However a lot of basic aviation parts work at cyclically repeated loadings and they are exposed to loadings and deformation in the field of low and high cycle fatigue. In this case there is necessity of deformation condition calculations or the stress-strain type which significantly influences on the cyclic durability of the parts. For increasing of reliability and cyclic durability of the parts the research purpose is to develop a way and criteria of the analysis and assessment of the stress-strain state for the identification of the most loaded areas of the parts limiting its fatigue. It is offered to consider the stress-strain type on the basis of coefficient of stiffness Ks calculated through the main tensions. In this case it is recommended to determine the most subjected to cracking initiating areas of the parts by the largest size of parameter K = K_sK_u. The research of the finite element analysis of the stress-strain state for the low pressure turbine shaft and high pressure compressor disks of D-30 series gas turbine engine was made according to this parameter. On the basis of this parameter the finite element analysis of the stress-strain state for the low pressure turbine shaft and high pressure compressor disks of the gas-turbine engine of D-30 series is researched in this work.
机译：基于等同应力和耐久性理论的应力 - 应变状态分析用于当前典型强度计算目前零件的诊断。然而，许多基本的航空部件在循环重复的负载下工作，它们暴露于低循环疲劳领域的负载和变形。在这种情况下，存在变形条件计算或应力 - 应变类型，这显着影响了部件的循环耐久性。为了提高零件的可靠性和循环耐久性，研究目的是开发一种方法和评估应力 - 应变状态的分析和评估，以确定限制其疲劳的零件的最负载区域。提供基于通过主要张力计算的刚度Ks系数的应力 - 应变型。在这种情况下，建议通过最大的参数k = k_sk_u确定零件的开发区域最多。根据该参数，制造了对D-30系燃气发动机的低压涡轮轴和高压压缩机盘的应力 - 应变状态的有限元分析的研究。在该参数的基础上，在这项工作中研究了D-30系列的气体 - 涡轮发动机的低压涡轮轴和高压压缩机盘的有限元分析。

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