Investigation on dynamic contact stress of the gear system with structure-thermal coupling field

2021 ◽  
Author(s):  
Zhengda Han ◽  
Daqian Pang ◽  
Shi Qiu ◽  
Yong Li ◽  
Xiaoyu Gao
Keyword(s):  
Contact Stress ◽  
Dynamic Contact ◽  
Gear System ◽  
Thermal Coupling ◽  
Coupling Field

The Force Analysis of Anchor Anti-Slide Pile in Slope Reinforcement under Seismic Load

2015 ◽  
Vol 777 ◽  
pp. 148-153
Author(s):  
Hui Ding ◽  
Jie Chen ◽  
Li Song
Keyword(s):  
Dynamic Analysis ◽  
Seismic Wave ◽  
Contact Stress ◽  
Dynamic Performance ◽  
Bending Moment ◽  
Dynamic Contact ◽  
Design Parameters ◽  
Seismic Load ◽  
Slope Reinforcement ◽  
Earthquake Action

The force affect factors of anchor anti-slide pile in slope reinforcement under seismic load are studied in this paper. First of all, the method of dynamic analysis is introduced in FLAC3D. At the same time, seismic wave is selected in seismic dynamic analysis. Then, the sensitivity influence of anti-slide pile design parameters on dynamic contact stress, shear force and dynamic bending moment is analyzed by applying the seismic wave, giving the most significant effect factors of the dynamic contact stress and dynamic moment. In the end, the distribution regular of the contact force and the pile body stress under earthquake action is analyzed by selecting a case, laying a theoretical foundation for the further study of the dynamic performance of the reinforced slope.

A TRANSIENT DYNAMIC CONTACT PROBLEM IN THREE DIMENSIONS

1994 ◽  
Vol 05 (02) ◽  
pp. 215-217
Author(s):  
T.Y. Fan ◽  
H.G. Hahn ◽  
A. Voigt
Keyword(s):  
Contact Problem ◽  
Contact Stress ◽  
Dynamic Stress ◽  
Three Dimensional ◽  
Dynamic Contact ◽  
Three Dimensions ◽  
Dynamic Contact Problem ◽  
Transient Dynamic ◽  
Elliptic Region ◽  
Contact Displacement

In this study a three-dimensional transient dynamic contact problem is solved, and a theorem relating the contact stress and displacement over an elliptic region is proved. Numerical results for the contact displacement-time variation clearly demonstrate the effect of inertia induced by the dynamic stress.

Dynamic contact stress and frictional heat analysis of femoral head-on-acetabular cup interface based on calculation and simulation methods

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xingxing Fang ◽  
Dahan Li ◽  
Yucheng Xin ◽  
Songquan Wang ◽  
Yongbo Guo ◽  
...  
Keyword(s):  
Finite Element ◽  
Femoral Head ◽  
Contact Stress ◽  
Contact Area ◽  
Gait Cycle ◽  
Dynamic Change ◽  
Dynamic Contact ◽  
Frictional Heat ◽  
Acetabular Cup ◽  
Content Type

Purpose The purpose of this paper is to systematically study the dynamic contact stress, frictional heat and temperature field of femoral head-on-acetabular cup contact pairs in a gait cycle. Design/methodology/approach In this paper, four common femoral head-on-acetabular cup contact pairs are used as the research objects, mathematical calculations and finite element simulations are adopted. The contact model of hip joint head and acetabular cup was established by finite element simulation to analyze the stress and temperature distribution of the contact interface. Findings The results show that the contact stress of the head-on-cup interface is inversely proportional to the contact area; high contact stress directly leads to greater frictional heat. However, hip joints with metal-on-polyethylene or ceramic-on-polyethylene paired interfaces have lower frictional heat and show a significant temperature rise in one gait cycle, which may be related to the material properties of the acetabular cup. Originality/value Previous studies about calculating the interface frictional heat always ignore the dynamic change process in the contact load and the contact area. This study considered the dynamic changes of the contact stress and area of the femoral head-on-acetabular cup interface, and four common contact pairs were systematically analyzed.

Dynamic Analysis of Less-Teeth Gear Transmission System

2013 ◽  
Vol 397-400 ◽  
pp. 446-450
Author(s):  
Dong Sheng Zhang ◽  
Zhang Lai Lv ◽  
Jian Jun Zhang
Keyword(s):  
Design Theory ◽  
Optimization Design ◽  
Dynamic Contact ◽  
Gear System ◽  
Fem Model ◽  
Profile Modification ◽  
Gear Design ◽  
Gear Transmission System ◽  
Contact Characteristic ◽  
Gear Profile

According to the less-teeth gear design theory, the FEM model of less-teeth gear system was established, and its dynamic contact characteristic was analyzed, then dynamic contact simulation was realized. Laws of contact area, contact stress and tooth stress change over time were got, which can be used for the gear profile modification and dynamic characteristics optimization design of the less-teeth gear system.

scholarly journals Loss of ACL function leads to alterations in tibial plateau common dynamic contact stress profiles

2017 ◽  
Vol 61 ◽  
pp. 275-279 ◽  
Author(s):  
Tony Chen ◽  
Hongsheng Wang ◽  
Russell Warren ◽  
Suzanne Maher
Keyword(s):  
Contact Stress ◽  
Tibial Plateau ◽  
Dynamic Contact ◽  
Stress Profiles

A miniature piezoelectric polymer transducer for in vitro measurement of the dynamic contact stress distribution

1992 ◽  
Vol 25 (6) ◽  
pp. 627-635 ◽  
Author(s):  
Mehran Manouel ◽  
Hubert S. Pearlman ◽  
Abdelfatihe Belakhlef ◽  
Thomas D. Brown
Keyword(s):  
Stress Distribution ◽  
Contact Stress ◽  
Dynamic Contact ◽  
Piezoelectric Polymer ◽  
Contact Stress Distribution
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