离散连续强化零件接触相互作用多准则分析

Q4 Engineering
M. Tkachuk, A. Marchenko, S. Kravchenko, M. Tkachuk, O. Veretelnyk, A.V. Grabovskyi, V. Veretelnyk
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引用次数: 0

摘要

研究了材料性能对强化结构件接触相互作用的影响。采用离散连续强化技术对这些零件进行加工。接触部件由不同的材料制成。在一侧有一个铝合金部件。它的表面生长着一层微小的氧化陶瓷。另一边是铸铁或钢制零件,表面上有电火花法引入的强化材料斑点群岛。因此,对第一部分进行连续处理,对第二部分进行离散处理。研究了强化区材料性能对此类零件接触相互作用的影响。已经就材料的选择和离散连续加固的技术模式提出了建议。具体而言,接触压力分布和Mises应力的特征显著取决于铝件上氧化陶瓷层模量和铸铁件上离散强化区模量的组合。同时,随着离散强化区材料弹性模量的增大,这些分布发生了质的变化。接触区域中心部分的接触压力先达到最小值,然后达到最大值。同时,氧化陶瓷层的弹性模量对铝件的影响不太明显。接触压力和von Mises应力的相对水平在相当宽的廊道内连续强化区和离散强化区材料弹性模量变化范围内变化。因此,可以控制被控值的电平。因此,有机会证明选择一种或另一种材料,以及在创建某些结构元素时的建设性和技术解决方案。不仅接触压力和冯米塞斯应力水平对新机器部件的技术解决方案合理化很重要。接触相互作用决定了结构单元之间的载荷分布,在一定程度上直接影响结构单元的应力-应变状态和强度。此外,还启动了一系列的过程和状态:摩擦,磨损,承载能力。它们取决于接触力的分布。因此,从物理角度来看,实现了一个“多物理”过程,从技术角度来看,这是一个“多标准”过程。因此,在每个阶段都会出现一些相互竞争的要求和限制,在为新产品(特别是内燃机)寻找合理的技术解决方案时应考虑到这些要求和限制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
MULTI-CRITERIA ANALYSIS OF CONTACT INTERACTION OF DISCRETE-CONTINUALLY STRENGTHENED PARTS
This paper considers the influence of material properties on the contact interaction of strengthened structural parts. Discrete-continual strengthening technology is used to process these parts. Contacting parts are made of different materials. On the one side there is an aluminum alloy part. A microscopic layer of oxide ceramics is grown on its surface. On the other side there is a cast iron or steel part with an archipelago of strengthened material spots introduced by the electric spark method on the surface. Hence, the first part is processed continually, and the second one is processed discretely. The influence of material properties in the strengthening zones on the contact interaction of such parts is studied. Recommendations regarding the choice of materials and technological modes of discrete-continual strengthening have been developed. In particular, it was established that the character of contact pressure distribution and Mises stresses significantly depends on the combination of the moduli of the oxide ceramic layer on the aluminum part and the discrete strengthening zone on the cast iron part. At the same time, with the growth of the elasticity modulus of the material of discrete strengthening zones, a qualitative change in these distributions occurs. The contact pressure in the central part of the contact area first acquires a minimum and then a maximum. At the same time, the influence of the elastic modulus of the oxide ceramic layer on the aluminum part is less pronounced. The relative level of contact pressure and von Mises stresses varies in the studied range of variation of the modulus of elasticity of materials of continual and discrete strengthening zones in a fairly wide corridor. Therefore, it is possible to control the level of controlled values. And therefore there is an opportunity to justify the choice of one or another material, as well as constructive and technological solutions when creating certain structure elements. Not only the level of contact pressure and von Mises stresses is important for rationalizing technical solutions of new machine components. Contact interaction determines the loads distribution between structural elements, which in a certain way directly affects their stress-strain state and strength. Also, a series of processes and states are launched in addition: friction, wear, bearing capacity. They depend on the distribution of contact forces. So, from a physical point of view, a “multi-physical” process is implemented, and from a technical point of view, this is a “multi-criteria” process. As a result, a number of competing requirements and limitations arise at each of the stages, which should be taken into account when justifying rational technical solutions for new products, in particular, internal combustion engines.
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来源期刊
内燃机学报
内燃机学报 Engineering-Mechanical Engineering
CiteScore
1.00
自引率
0.00%
发文量
3050
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