Dynamic Responses and Reliability Analysis of a Parallel Mechanism with Lubrication Revolute Clearance Joints and Uncertain Parameters

IF 0.6 4区工程技术 Q4 MECHANICS

Mechanics of Solids Pub Date : 2024-12-28 DOI:10.1134/S0025654424604361

Xiulong Chen, Chengsi Ning, Yonghao Jia

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Abstract

Joint clearances and uncertain parameters of a parallel mechanism will cause the error between the actual dynamic response and the desired dynamic response, leading to a dynamic reliability problem. Currently, the reliability analysis of mechanisms mainly focuses on mechanism with clearances or with uncertain parameters, very few involve considering both clearances and uncertainty parameters simultaneously. The main purpose of this article is to propose a dynamic reliability analysis method of a parallel mechanism with revolute clearance and uncertainty parameters. The dynamic reliability analysis of a parallel mechanism with lubrication revolute clearance joints and uncertain parameters is studied in this paper. The 3-RRPaR spatial parallel mechanism is taken as an example, lubrication revolute clearance joints model is established, and the dynamic model of mechanism with lubrication revolute clearance joints is derived. The dynamic reliability model of mechanism with lubrication revolute clearance joints and uncertain parameters is developed. The effects of various random uncertain parameters on the dynamic reliability of mechanism with lubrication revolute clearance joints are analyzed. This can not only provide a new method for dynamic response reliability analysis of mechanism with lubrication clearances and uncertain parameters, but also lay the foundation for dynamic response and reliability optimization design.

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含不确定参数润滑旋转间隙并联机构动态响应及可靠性分析

并联机构的关节间隙和不确定参数会导致机构的实际动态响应与期望动态响应存在误差，从而导致机构的动态可靠性问题。目前，机构的可靠性分析主要集中在具有间隙或不确定参数的机构上，很少同时考虑间隙和不确定参数。本文的主要目的是提出一种具有转动间隙和不确定参数的并联机构的动态可靠性分析方法。研究了具有润滑、转动间隙关节和不确定参数的并联机构的动态可靠性分析。以3-RRPaR空间并联机构为例，建立了润滑旋转间隙关节模型，推导了含润滑旋转间隙关节的机构动力学模型。建立了具有润滑、转动间隙关节和不确定参数的机构的动态可靠性模型。分析了各种随机不确定参数对带润滑的旋转间隙连杆机构动态可靠性的影响。这不仅为具有润滑间隙和不确定参数的机构动态响应可靠性分析提供了一种新的方法，而且为动态响应和可靠性优化设计奠定了基础。

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来源期刊

Mechanics of Solids 医学-力学

CiteScore

1.20

自引率

42.90%

发文量

112

审稿时长

6-12 weeks

期刊介绍： Mechanics of Solids publishes articles in the general areas of dynamics of particles and rigid bodies and the mechanics of deformable solids. The journal has a goal of being a comprehensive record of up-to-the-minute research results. The journal coverage is vibration of discrete and continuous systems; stability and optimization of mechanical systems; automatic control theory; dynamics of multiple body systems; elasticity, viscoelasticity and plasticity; mechanics of composite materials; theory of structures and structural stability; wave propagation and impact of solids; fracture mechanics; micromechanics of solids; mechanics of granular and geological materials; structure-fluid interaction; mechanical behavior of materials; gyroscopes and navigation systems; and nanomechanics. Most of the articles in the journal are theoretical and analytical. They present a blend of basic mechanics theory with analysis of contemporary technological problems.