http://hdl.handle.net/10149/64755 Thu, 20 Jun 2013 09:02:02 GMT 2013-06-20T09:02:02Z http://hdl.handle.net/10149/249471 Title: The preliminary development of computational software system for creep damage analysis in weldment Authors: Tan, F. (Feng); Xu, Q. (Qiang); Lu, Z. (Zhongyu); Xu, D. (Donglai) Abstract: In order to develop a computational software system for creep damage analysis of weldment, the background knowledge had been briefly reviewed and understood. Two subjects, software interface and integration algorithm had been proposed and researched. This paper explained the methodology of software development and posted the validation result of these two subjects. Sun, 01 Jan 2012 00:00:00 GMT http://hdl.handle.net/10149/249471 2012-01-01T00:00:00Z http://hdl.handle.net/10149/249452 Title: Preliminary analysing of experimental data for the development of high Cr Alloy Creep damage constitutive equations Authors: An, L. L. (Li); Xu, Q. (Qiang); Xu, D. (Donglai); Lu, Z. (Zhongyu) Abstract: This paper presents the current research of preliminary analysing of experimental data for the development of high Cr Alloy Creep damage Constitutive Equations (such as P91 alloy). Firstly, it briefly introduces the background of general creep deformation, rupture and continuum damage mechanics. Secondly, it illustrates the constitutive equations used for P91 alloy or its weldment, especially of the form and deficiencies of two kinds of most widely used typical creep damage constitutive equations Kachanov-Rabotnov-Hayhurst (KRH) and Xu's formations. And then, the methodology for development of new set constitutive equation proposed by Xu (2004)[1] has been followed in this research. Fourthly, there is a critically analysis of the specific experiment data for P91 alloy and its weldment. Afterwards, the specific requirements for developing a new set constitutive equation have been reported. Finally it suggests the directions for future work. This paper contributes to the knowledge for the developing creep damage constitutive equations for the specific material. Sun, 01 Jan 2012 00:00:00 GMT http://hdl.handle.net/10149/249452 2012-01-01T00:00:00Z http://hdl.handle.net/10149/249451 Title: Research in the development of computational FE software for creep damage mechanics Authors: Liu, D. (Dezheng); Xu, Q. (Qiang); Lu, Z. (Zhongyu); Xu, D. (Donglai) Abstract: This paper reports the preliminary development of the computational (finite element) software for creep damage analysis. Firstly, it reviews the current state of how to obtain such computational capability. Secondly, it completes with a flow diagram of the structure of new finite element software to be guided in developing in-house FE software. It further reports the strategy of how to obtain such FE software for creep problem. Finally, some validation practices are summarized. Sun, 01 Jan 2012 00:00:00 GMT http://hdl.handle.net/10149/249451 2012-01-01T00:00:00Z http://hdl.handle.net/10149/224919 Title: Optimised implementation of adaptive GPC for low-order systems with time delays Authors: Short, M. (Michael) Thu, 26 Apr 2012 00:00:00 GMT http://hdl.handle.net/10149/224919 2012-04-26T00:00:00Z