scholarly journals Influence of finite element mesh size on the carrying capacity analysis of single-row ball slewing bearing

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110090
Author(s):  
Peiyu He ◽  
Qinrong Qian ◽  
Yun Wang ◽  
Hong Liu ◽  
Erkuo Guo ◽  
...  
Keyword(s):  
Finite Element ◽  
Carrying Capacity ◽  
Mesh Size ◽  
Finite Element Mesh ◽  
Fe Model ◽  
Element Mesh ◽  
Heavy Load ◽  
Slewing Bearing ◽  
Maximum Contact ◽  
Slewing Bearings

Slewing bearings are widely used in industry to provide rotary support and carry heavy load. The load-carrying capacity is one of the most important features of a slewing bearing, and needs to be calculated cautiously. This paper investigates the effect of mesh size on the finite element (FE) analysis of the carrying capacity of slewing bearings. A local finite element contact model of the slewing bearing is firstly established, and verified using Hertz contact theory. The optimal mesh size of finite element model under specified loads is determined by analyzing the maximum contact stress and the contact area. The overall FE model of the slewing bearing is established and strain tests were performed to verify the FE results. The effect of mesh size on the carrying capacity of the slewing bearing is investigated by analyzing the maximum contact load, deformation, and load distribution. This study of finite element mesh size verification provides an important guidance for the accuracy and efficiency of carrying capacity of slewing bearings.

scholarly journals An Analysis Method of Carrying Capacity Accuracy of Three-Row Roller Slewing Bearing

Mechanika ◽  
2021 ◽  
Vol 27 (5) ◽  
pp. 360-367
Author(s):  
Peiyu HE ◽  
Yun WANG ◽  
Hua WANG
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Carrying Capacity ◽  
Large Scale ◽  
Mesh Size ◽  
Element Model ◽  
Element Mesh ◽  
Slewing Bearing ◽  
Core Components ◽  
Heavy Loads

Three-row roller slewing bearings are the core components of large-scale rotating equipment. It has a large structural size and is subjected to heavy loads, which requires extremely high carrying capacity. The effect of finite element mesh size on the carrying capacity accuracy of three-row roller slewing bearing is investigated. A local finite element model is established to analyze the contact area between the roller and the raceway, which is compared with the Hertz contact theory to verify the reasonable mesh size of the finite element model. The local spring finite element model is established, and the effect of the mesh size on the offset and the declination of the upper and lower raceway is investigated; The overall finite element model of the slewing bearing is established to analyze the effect of the mesh size and the nonlinear spring stiffness on the carrying capacity accuracy. The whole circle deformation of the ring and the load distribution is investigated to determine the reasonable mesh size. This article provides a method and idea for the verification of the three-row roller slewing bearing finite element model, which is beneficial to improve the calculation accuracy of the bearing capacity of the three-row roller slewing bearing.

Finite Element Mesh Generator Applying Constraints’ Propagation and Isoparametric Mapping

1991 ◽  
Author(s):  
J. Rodriguez ◽  
M. Him
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
Element Model ◽  
Finite Element Mesh ◽  
Fe Model ◽  
Element Analysis ◽  
Element Mesh ◽  
Mesh Generator ◽  
Generation Algorithm ◽  
Essential Input

Abstract This paper presents a finite element mesh generation algorithm (PREPAT) designed to automatically discretize two-dimensional domains. The mesh generation algorithm is a mapping scheme which creates a uniform isoparametric FE model based on a pre-partitioned domain of the component. The proposed algorithm provides a faster and more accurate tool in the pre-processing phase of a Finite Element Analysis (FEA). A primary goal of the developed mesh generator is to create a finite element model requiring only essential input from the analyst. As a result, the generator code utilizes only a sketch, based on geometric primitives, and information relating to loading/boundary conditions. These conditions represents the constraints that are propagated throughout the model and the available finite elements are uniformly mapped in the resulting sub-domains. Relative advantages and limitations of the mesh generator are discussed. Examples are presented to illustrate the accuracy, efficiency and applicability of PREPAT.

Effect of high-strength bolts and supporting structures on the carrying capacity of three-row roller slewing bearings

2020 ◽  
pp. 095440622094958
Author(s):  
Peiyu He ◽  
Yun Wang
Keyword(s):  
Carrying Capacity ◽  
Large Scale ◽  
High Strength ◽  
Element Model ◽  
Heavy Load ◽  
Slewing Bearing ◽  
Bolt Preload ◽  
Core Components ◽  
Slewing Bearings ◽  
Supporting Structures

Three-row roller slewing bearings are the core components of large-scale rotating equipment. A large structural size and heavy load conditions require an extremely high carrying capacity. The inner ring of the slewing bearing is divided into upper and lower parts in this paper, which is the same as the actual working condition and effectively avoids the increase in the stiffness caused by simplifying the inner ring as a whole. Different bolt models and bolt preloads, the effect of the roller diameter on the stiffness and the strength of the support structure are analysed to improve the calculation accuracy and efficiency of the carrying capacity of the slewing bearing. Calculation formulas based on engineering experience and strain measurement are used to verify the validity of the finite element model. The research shows that the carrying capacity of the slewing bearing is affected by the supporting structure; as the bolt preload increases, the overall deformation of the slewing bearing decreases, and the load distribution is smoother. The key structures of the slewing bearing are studied, which is conducive to improving the carrying capacity and optimizing the design.

Optimization of a finite element mesh for plates subjected to in-plane patch loading

2019 ◽  
Vol 33 (3) ◽  
pp. 1185-1193 ◽  
Author(s):  
Ghania Ikhenazen ◽  
Messaoud Saidani ◽  
Madina Kilardj
Keyword(s):  
Finite Element ◽  
Finite Element Mesh ◽  
Element Mesh ◽  
Patch Loading
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