Loading Analysis on the Thread Teeth in Cylindrical Pipe Thread Connection

2010 ◽  
Vol 132 (3) ◽  
Author(s):  
Shou-Jun Chen ◽  
Qi An ◽  
Yi Zhang ◽  
Lian-Xin Gao ◽  
Qiang Li

This paper presents a new analytical method that can calculate the load distribution on the thread teeth in cylindrical pipe threaded connection. The new method was developed by analyzing each male and female thread tooth from the connection on the basis of elastic mechanics. By using this method, the load distribution on each thread tooth can be calculated with the tightening torque and thread numbers. By applying the new method on the sample of API 88.9 mm round threaded connection, the obtained results show that the load on thread tooth mainly concentrates on the last four or five threads engaged. By using the finite element analysis method to the same sample validates the new method. The new method proposed in this paper is practical and convenient because it can be applied to calculate the load and deformation on each thread tooth just with tightening torque and thread numbers, which is easier to implement in practice.

2011 ◽  
Vol 133 (5) ◽  
Author(s):  
Shou-Jun Chen ◽  
Qi An ◽  
Yi Zhang ◽  
Qiang Li

Tightening torque is one of the main factors that could affect the connection quality in threaded connections. On the basis of elastic mechanics and thick cylinder theory, this paper established a new analytical model based on the geometric parameters of thread tooth and the calculation method of tightening torque on P-110S threaded connections was also obtained by calculating the frictional torque on each threaded surface. In this paper, the friction coefficient on the real contact thread tooth was measured by the developed experimental equipment that could be used to simulate the contact of threaded surfaces approximately. By applying the new method on P-110S threaded connection and comparing the results obtained by analytical model with the true make-up torque in application, it could be found that the analytical model and the calculation method proposed in this paper are reasonable. The new method was also validated by using the finite element analysis method to the same sample. The new method proposed in this paper is practical and convenient because it can be applied to calculate the tightening torque just with geometric parameters and thread numbers, which is easier to implement in application.


2018 ◽  
Vol 55 (4) ◽  
pp. 666-675
Author(s):  
Mihaela Tanase ◽  
Dan Florin Nitoi ◽  
Marina Melescanu Imre ◽  
Dorin Ionescu ◽  
Laura Raducu ◽  
...  

The purpose of this study was to determinate , using the Finite Element Analysis Method, the mechanical stress in a solid body , temporary molar restored with the self-curing GC material. The originality of our study consisted in using an accurate structural model and applying a concentrated force and a uniformly distributed pressure. Molar structure was meshed in a Solid Type 45 and the output data were obtained using the ANSYS software. The practical predictions can be made about the behavior of different restorations materials.


2021 ◽  
Vol 328 ◽  
pp. 07003
Author(s):  
Cipto Cipto ◽  
Klemens A. Rahangmetan ◽  
Christian Wely Wullur ◽  
Farid Sariman ◽  
Hariyanto Hariyanto

This study analyzes the maximum load on the shaft construction with a diameter of 12 mm and a length of 581 mm. The shaft is designed as a shaft for cutting meat with a capacity of 5 kg. The analysis was performed using the finite element analysis method included in the Autodesk software. According to mathematical calculations, the shaft is considered safe because the value of the admissible tension τa = 7.380 kg / mm2 is greater than the maximum tension τp 5.62 kg / mm2. Based on the simulation results of the test, the shaft experiences a maximum off-stress of 61.89 MPa, a maximum displacement of 0.07715 mm, , and a safety factor of 3.34 µl so that the shaft is classified as safe for use with a Load capacity of 5 Kg


2013 ◽  
Vol 631-632 ◽  
pp. 686-690
Author(s):  
Yi Li Shen

With the rapid penetration of information technology in various fields, CAD/CAM/CAE technology has been widely used to fundamentally change the traditional design, production, organizational models, it also has a very important significance to promote the technological transformation of existing enterprises, bring the whole structural change of the night, develop the new technologies and the promotion of economic growth. The paper uses the blades of steam turbine as an example, combined with the finite element analysis method to study the whole cutting process, the whole process was simulated and the results of error were had analysis and optimization.


2012 ◽  
Vol 220-223 ◽  
pp. 859-862
Author(s):  
Nan Liu ◽  
Jin Li Liu ◽  
Bao Hua Fang ◽  
Hong Wang Zhang ◽  
Wei Guang Shao

In this paper, as the research object a manual piston pump is designed lightweight, by using optimization theory and the finite element analysis method. The manual piston pump body, the piston and the end cover are designed proper structures include diameter, height, ayout, etc. The optimized calculation and research analysis provide credible theory and experience for engineering application.


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