Member stiffnesses and interface contact characteristics of bolted joints

Gao, Yang; Hong, Jun; Wang, Ning; Zhu, Linbo; Ding, Yucheng; Yang, Zhaohui

doi:10.1109/isam.2011.5942304

Cited by 8 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the temperature cycling load used herein, the purpose is to simulate the accuracy retention capability of the assembly under extreme ambient temperature changes. The thermal error caused by the thermal deformation is directly related to the distribution of contact pressure, as shown in [ 21 , 22 ]. Under the influence of thermal expansion, the contact points on the contact surface may move relatively to each other, changing the relative positions of the assembly parts.…”

Section: Discussionmentioning

confidence: 99%

“…The pressure distribution on the wafer surface can affect the deformation of the wafer and cause dimensional errors on the pressed wafer. In the bolt connection, the connection strength and deformation of connected parts are affected by the contact pressure distribution [ 21 , 22 , 23 ]. Contact pressure distribution affects the thermal conductivity of the contact surface and is also used in thermal error analysis of machine tool assemblies [ 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

“…On one hand, it affects the contact deformation so that the relative positional relationship between the contact surfaces changes, such as [ 15 , 16 , 17 , 18 , 19 , 20 ]. On the other hand, it affects the mechanical strength of the connected parts by affecting the transmission of the contact force between the contact faces, thus affecting the ability of the assembled part to resist deformation caused by external forces, such as [ 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Entropy-Based Method to Evaluate Contact-Pressure Distribution for Assembly-Accuracy Stability Prediction

Chen

Jin

Shang

et al. 2019

Entropy

View full text Add to dashboard Cite

Assembly accuracy and accuracy stability prediction are significant research directions for improving the reliability and efficiency of precision assembly. In this study, an improved method for assembly accuracy stability prediction, based on the contact-pressure distribution entropy, is presented. By using the contact-pressure distribution as the evaluation parameter instead of the strain-energy distribution, the improved method can not only predict the assembly accuracy of precision assembly more efficiently, but also predict the stability of the assembly accuracy with variations in the ambient temperature. The contact pressure has a clearer mechanical significance than strain energy density in the assembly process, which can be used to distinguish the actual contact area from the contact surface. Hence, the improved method is more efficient and accurate than the original. This study utilizes the same case used in the original method and an additional case from the actual production process to verify the improved method. The correctness and validity of the improved method are proved by these case studies.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Entropy-Based Method to Evaluate Contact-Pressure Distribution for Assembly-Accuracy Stability Prediction

Chen

Jin

Shang

et al. 2019

Entropy

View full text Add to dashboard Cite

show abstract

“…e relationship between contact stress and stiffness of joint surface can be obtained by substituting formula (6) with formula (7):…”

Section: Stiffness Test Of Joint Surfacementioning

confidence: 99%

“…Some scholars have studied the stiffness characteristics of bolted connectors by combining experiment with theory. Some scholars have also used the finite element method [4][5][6][7][8]. Pedersen analyzed the stiffness of bolted connectors and then obtained the formula for calculating the stiffness of bolted connectors by fitting.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Calculation Method and Stiffness Characteristic Analysis of Bolted Connectors

Hua

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

At present, few scholars have studied the effect of surface roughness on assembly stiffness. The influence of the joint surface stiffness on the overall stiffness is neglected. In this paper, a new method for calculating the stiffness of bolted joints is presented. The effect of joint surface stiffness on the overall stiffness is considered. Firstly, the relationship between load and displacement between cylinder and cylinder (including the joint surface with certain roughness) is studied, and the stiffness characteristic expression of the joint surface is obtained; the results are compared with the traditional stiffness calculation theory, and then, the influence of bolt connection surface on bolt connection is studied and compared with the stiffness calculation results of traditional bolt connection. The results show that the theoretical model presented in this paper is more practical.

show abstract

Establishment and Verification of Nonlinear Bolt Head Connection Stiffness Theoretical Model Based on Levenberg-Marquardt Method

Hua

et al. 2020

IEEE Access

View full text Add to dashboard Cite

Although some scholars have established the calculation method of bolt head connection characteristics, the method contains fewer influence factors; the calculation accuracy is not high, and the general applicability is limited. Based on the Levenberg Marquardt optimization algorithms, a more accurate calculation model of bolt head connection stiffness is proposed in this paper. The model includes many parameters such as bolt head thickness, equivalent diameter, bolt diameter, thickness of connected parts, elastic modulus of bolt and elastic modulus of connected parts. Through the finite-element verification and comparison with the results of the Fears Alkatan method, the calculation results of the bolt head connection stiffness calculation model in this paper are effective and accurate, which provides a universal calculation model for calculating the bolt head connection stiffness of various parameters, and fills the shortage of inaccurate calculation of the current theoretical model of bolt head stiffness.INDEX TERMS bolt head, stiffness, finite element, connected parts.

show abstract

Member stiffnesses and interface contact characteristics of bolted joints

Cited by 8 publications

References 9 publications

Entropy-Based Method to Evaluate Contact-Pressure Distribution for Assembly-Accuracy Stability Prediction

Entropy-Based Method to Evaluate Contact-Pressure Distribution for Assembly-Accuracy Stability Prediction

Stiffness Calculation Method and Stiffness Characteristic Analysis of Bolted Connectors

Establishment and Verification of Nonlinear Bolt Head Connection Stiffness Theoretical Model Based on Levenberg-Marquardt Method

Contact Info

Product

Resources

About