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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   MARCH 2017 , Volume 16 , Number 12 ; Page(s) 249 To 258.
 
Paper: 

THERMOELASTIC ANALYSIS OF CIRCUMFERENTIAL CRACKS IN THICK-WALLED CYLINDERS CONSIDERING DUAL PHASE LAG THEORY

 
 
Author(s):  FARAHINEJAD EDRIS, NAZARI MOHAMMAD BAGHER*, MAHDIZADEH ROKHI MASOUD
 
* DEPARTMENT OF MECHANICAL ENGINEERING, SHAHROOD UNIVERSITY OF TECHNOLOGY, SHAHROOD, IRAN
 
Abstract: 

In this paper, the stress intensity factor for an internal circumferential crack in a thick-walled cylinder has been determined. The cylinder has been subjected to an axisymmetric thermal shock on the outer surface according to the dual phase lag theory. The uncoupled, quasi-stationary thermoelastic governing equations have been assumed. The temperature and stress fields have been solved analytically in the Laplace domain and its Laplace inversion transform has been obtained numerically. Using weight function method, the stress intensity factor for mode-I has been extracted. Temperature, stress and stress intensity factor of hyperbolic and dual phase lag theories have been compared and the effects of heat flux and temperature gradient time relaxations on the temperature, stress and stress intensity factor have been studied. According to the results, the dual phase lag temperature distribution is different in comparison with the Fourier model. Also, the stress intensity factor for dual phase lag model is significantly larger than the Fourier one. Moreover, the maximum stress intensity factor in dual phase lag model occurs for a crack that the peak of stress wave reaches to its tip. Results show assumption of adequate heat conduction model for structure design under transient thermal loading is critical.

 
Keyword(s): STRESS INTENSITY FACTOR, DUAL PHASE LAG, WEIGHT FUNCTION METHOD, THERMAL SHOCK, CIRCUMFERENTIAL CRACK IN CYLINDER
 
 
References: 
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+ Click to Cite.
APA: Copy

FARAHINEJAD, E., & NAZARI, M., & MAHDIZADEH ROKHI, M. (2017). THERMOELASTIC ANALYSIS OF CIRCUMFERENTIAL CRACKS IN THICK-WALLED CYLINDERS CONSIDERING DUAL PHASE LAG THEORY. MODARES MECHANICAL ENGINEERING, 16(12 ), 249-258. https://www.sid.ir/en/journal/ViewPaper.aspx?id=572727



Vancouver: Copy

FARAHINEJAD EDRIS, NAZARI MOHAMMAD BAGHER, MAHDIZADEH ROKHI MASOUD. THERMOELASTIC ANALYSIS OF CIRCUMFERENTIAL CRACKS IN THICK-WALLED CYLINDERS CONSIDERING DUAL PHASE LAG THEORY. MODARES MECHANICAL ENGINEERING. 2017 [cited 2021August04];16(12 ):249-258. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572727



IEEE: Copy

FARAHINEJAD, E., NAZARI, M., MAHDIZADEH ROKHI, M., 2017. THERMOELASTIC ANALYSIS OF CIRCUMFERENTIAL CRACKS IN THICK-WALLED CYLINDERS CONSIDERING DUAL PHASE LAG THEORY. MODARES MECHANICAL ENGINEERING, [online] 16(12 ), pp.249-258. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572727.



 
 
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