Role of Strain-Hardening Law on the Bursting Speed of a Rotating Thin-Walled Shaft

2008 ◽  
Vol 40 (2) ◽  
pp. 262-263
Author(s):  
U. Güven
Keyword(s):  
Strain Hardening ◽  
Hardening Law ◽  
Thin Walled ◽  
Bursting Speed

scholarly journals The Strength of Thin-Walled Cylinders Subjected to Dynamic Internal Pressures

1965 ◽  
Vol 32 (1) ◽  
pp. 104-108 ◽  
Author(s):  
C. J. Costantino
Keyword(s):  
Strain Hardening ◽  
Pressure Pulse ◽  
Dynamic Pressure ◽  
Equation Of Motion ◽  
Elastic Behavior ◽  
Large Displacements ◽  
Rigid Plastic ◽  
Hardening Law ◽  
Thin Walled ◽  
Internal Pressures

The equation of motion governing the response of long (infinite) cylinders to dynamic internal pressures is derived. Since large displacements and wall-thinning effects are taken into account, elastic behavior of the material is neglected. The material is assumed to be rigid-plastic, with strain-hardening being taken into account through the Ludwik power strain-hardening law. Numerical results are presented for a range of hardening constants from 0.01 to 1.0, covering the range applicable to most materials of interest. The form of the dynamic pressure considered is an initially peaked, linearly decaying pressure pulse. Charts are presented giving the pressure and duration required to produce a given final radius of the cylinder.

scholarly journals Magnetic Properties in Deformed Grain Oriented Electrical Steel: On the Role of Strain Hardening Exponent and Microstructural Developments

2012 ◽  
Vol 52 (11) ◽  
pp. 2100-2108 ◽  
Author(s):  
Satish Kumar Shekhawat ◽  
Basavaraj Vadavadagi ◽  
Vijay Devidas Hiwarkar ◽  
Jayshri Dumbre ◽  
Asha Ingle ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Strain Hardening ◽  
Electrical Steel ◽  
Strain Hardening Exponent

Elastic-Plastic Stress Analysis of Pressure Vessels

2012 ◽  
Author(s):  
Yang-chun Deng ◽  
Gang Chen
Keyword(s):  
Internal Pressure ◽  
Stress Analysis ◽  
Strain Hardening ◽  
Pressure Vessel ◽  
Plastic Instability ◽  
Pressure Vessels ◽  
Structural Deformation ◽  
Elastic Plastic ◽  
Thin Walled ◽  
Plastic Stress

To save material, the safety factor of pressure vessel design standards is gradually decreased from 5.0 to 2.4 in ASME Boiler and Pressure Vessel Codes. So the design methods of pressure vessel should be more rationalized. Considering effects of material strain hardening and non-linear structural deformation, the elastic-plastic stress analysis is the most suitable for pressure vessels design at present. This paper is based on elastic-plastic theory and considers material strain hardening and structural deformation effects. Elastic-plastic stress analyses of pressure vessels are summarized. Firstly, expressions of load and structural deformation relationship were introduced for thin-walled cylindrical and spherical vessels under internal pressure. Secondly, the plastic instability for thin-walled cylindrical and spherical vessels under internal pressure were analysed. Thirdly, to prevent pressure vessels from local failure, the ductile fracture strain of materials was discussed.

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