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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

Effects of Material Anisotropy on the Buckling Resistance of High Strength Steel Pipelines

Fathi, Ali Unknown Date
No description available.
72

Inelastic buckling of circular sandwich cylinders

Chandra, Hermanto. January 1983 (has links)
No description available.
73

Mechanical and thermal buckling analysis of laminated composite plates

Paremmal, Aswin, Kuruthukulangara Varghese, Roopak January 2023 (has links)
Composite laminated structures have many application fields such as aerospace, civil, marine, bio medical, transportation, and mechanical engineering because of their convenience in handling, and very good mechanical properties. Buckling behavior of laminated composite plates subjected to plane loads is indeed an important consideration in the primary design of aircraft and launch vehicle components. In addition, these elements may expose to high-temperature fields (while launching or reentry) which may result in failure due to thermal buckling. Composite laminated plates with holes and other openings are used as structural members in aerospace industry. The buckling behavior of such plates has always received much attention.In this study buckling analysis has been carried out of a laminar composite plate with an elliptical cut to shape. In the analysis, finite element method (FEM) was applied to perform parametric studies on various plates based on the shape and position and orientation of the hole.ANSYS software has been used as a platform for buckling analysis.
74

Inelastic buckling of circular sandwich cylinders

Chandra, Hermanto. January 1983 (has links)
No description available.
75

The structural performance of polymeric linings for nominally cylindrical gravity pipes

Boot, John C., Javadi, Akbar A., Toropova, Irina L. January 2004 (has links)
No / This paper considers both the linear elastic and creep buckling of polymeric pipe linings used for the rehabilitation of gravity pipes, for which external groundwater pressure has been identified as the prime source of loading. Theoretically perfect and imperfect conditions are considered, with the imperfections taken to be in the form of a concentric or eccentric annulus between the rigid host pipe (cylindrical constraint) and polymeric lining. Under these conditions two recently obtained mathematical procedures for the prediction of linearly and non-linearly elastic buckling are compared with the results of complementary laboratory testing. Linear elastic conditions are shown to be well approximated by undertaking short-term (¿30 min) testing under increasing pressure to failure. Controlled imperfections are introduced into the laboratory tests and excellent correlation with the theoretical predictions is obtained. In particular, the dominant geometrical imperfections are shown to be major influences on the obtained buckling pressure. The mathematical models are then adapted to simulate the creep buckling process under long-term constant pressure. The results obtained are again compared with those provided by complementary physical testing, and appropriate conclusions are made.
76

Predicting the creep lives of thin-walled cylindrical polymeric pipe linings to external pressure.

Boot, John C., Javadi, Akbar A., Toropova, Irina L. January 2004 (has links)
No / This paper considers both the linear elastic and creep buckling of polymeric pipe linings used for the rehabilitation of gravity pipes, for which external groundwater pressure has been identified as the prime source of loading. Theoretically perfect and imperfect conditions are considered, with the imperfections taken to be in the form of a concentric or eccentric annulus between the rigid host pipe (cylindrical constraint) and polymeric lining. Under these conditions two recently obtained mathematical procedures for the prediction of linearly and non-linearly elastic buckling are compared with the results of complementary laboratory testing. Linear elastic conditions are shown to be well approximated by undertaking short-term (¿30 min) testing under increasing pressure to failure. Controlled imperfections are introduced into the laboratory tests and excellent correlation with the theoretical predictions is obtained. In particular, the dominant geometrical imperfections are shown to be major influences on the obtained buckling pressure. The mathematical models are then adapted to simulate the creep buckling process under long-term constant pressure. The results obtained are again compared with those provided by complementary physical testing, and appropriate conclusions are made.
77

Experimental study of buckling behaviour of thin plate with slot

吳家驤, Ng, Ka-shain. January 1983 (has links)
published_or_final_version / Mechanical Engineering / Master / Master of Science in Engineering
78

Design of open cold rolled sections under axial force and bending moment

Nanou, Katerina January 1999 (has links)
No description available.
79

Studies in the mixed-mode analysis of partially prismatic thin-walled structures

Mansour-Tehrani, F. January 1989 (has links)
No description available.
80

An experimental investigation into the lateral buckling strength of plate girders

Oheachteirn, P. January 1983 (has links)
No description available.

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