The Optimum Autofrettage and Fatigue Prediction Based on Finite-Element Method for High Pressure Cylinder

2019 ◽  
Author(s):  
Weiqiang Huang ◽  
Wencheng Tang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Pressure ◽  
High Pressure Cylinder ◽  
Pressure Cylinder ◽  
Element Method

Fracture Analysis of Side-Gusset Plate of Combined-Roller Based on Finite Element Method

2006 ◽  
Vol 324-325 ◽  
pp. 137-140
Author(s):  
Li Gang Qu ◽  
Hang Gao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Pressure ◽  
Iron Ore ◽  
Fatigue Behavior ◽  
Operating Time ◽  
Fracture Analysis ◽  
Gusset Plate ◽  
Critical Location ◽  
Element Method

The side-gusset plate is connector of the combined-roller, which is the key component of the High-pressure Grinding Roller equipment that is applied in crushing raw iron ore, Fracture occurred at the bottom of the side-gusset plate while the roller’s operation. For exploring the reason of fracture, the stress distribution and corresponding critical location of the side-gusset plate were computed and analyzed according to two working situations based on finite element method. The analysis result illustrates that it is the failure of infant mortality because of overloading, not belongs to fatigue behavior, with the presence of the component operating time and the fracture cross-section’s granular feature as well. This result is a reliable foundation for succeeding redesign and manufacturing of side-gusset plate and other component, the feasible plan was brought forward to improve the component operation’s stability.

Static Analysis of Buttress Threads Using the Finite Element Method

1992 ◽  
Vol 114 (2) ◽  
pp. 209-212 ◽  
Author(s):  
A. Chaaban ◽  
M. Jutras
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Pressure ◽  
Load Distribution ◽  
Pressure Vessels ◽  
Stress Index ◽  
The Finite Element Method ◽  
Thread Root ◽  
Root Stress ◽  
Element Method

The finite element method has been used to investigate the stress field in threaded end closures of thick-walled high pressure vessels. A set of elastic analyses of vessels with 5, 8, 11, 15, 20 and 25 standard Buttress threads was used to propose a method for predicting the load distribution along the length of the thread. Root stress index factors in the region of the first three active threads are also included. The results of the present work contribute to the development of the new division of the ASME Pressure Vessel Code which is related to thick-walled high pressure vessels.

The Model of Fatigue Crack Growth in High Pressure Cylinder Wall

2010 ◽  
Author(s):  
Jan Brumek ◽  
Bohumir Strnadel ◽  
Ivo Dlouhy´
Keyword(s):  
Stress Intensity Factor ◽  
Finite Element ◽  
High Pressure ◽  
Fatigue Crack ◽  
Stress Intensity ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Cylinder Wall ◽  
High Pressure Cylinder ◽  
Pressure Cylinder

This paper presents numerical study to predict crack growth rate under fatigue loading in a high pressure cylinder wall made of high strength steel. Experimental fatigue crack growth data on three point bending test samples were applied to simulate and predict crack growth process using detailed three dimensional parametric finite element models. The fatigue crack propagation was based on linear elastic fracture mechanics and stress intensity factor determination. Finite element model provides results of crack growth analysis optimized for the stress levels of operating pressure level. Results are plotted on S-N curves and the disparity was explained in terms of crack growth rates near threshold stress intensity factor range. Results were compared with an experimental fatigue test.

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