TAILIEUCHUNG - Modeling and Simulation for Material Selection and Mechanical Design Part 7

Tham khảo tài liệu 'modeling and simulation for material selection and mechanical design part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Figure 40 Relation between stresses at the center of ingot and casting speed. as mushy zone which is a mixture of solid and liquid phases. Figure 49 illustrates an example of spray coating system which is developed to fabricate laminated plate. In most cases of the spray coating process after the spray layer is solidified completely the other kind of material is poured onto the substrate so that the inner boundary grows and the interface of molten state moves toward spray layer direction. In the spray coating process solidifying material in the growing domain undergoes a variation of mechanical quantities such as mass momentum and energy as well as the change of material properties due to phase transformation from liquid to solid state. The complicated interaction between temperature and inelastic deformation in this case is to be taken into consideration. B. Numerical Model and X-Ray Residual Stress Measurement 1. Modeling of Numerical Simulation To verify the validity of the theory and the procedure stated above simulation of the fields of temperature and solidification mode and the stress Copyright 2004 by Marcel Dekker Inc. All Rights Reserved. Figure 41 Relation between stresses at the center of ingot and discharge of cooling water. distribution are performed over the course of the spray coating process of laminated plates with two layers. The assumption is made that both ends of laminated plate are constrained during the spray coating and that the laminated plates are large enough so that a growing model of two-dimensional finite element is proposed to interpret the experimental phenomena of the spray coating process and to compute the interfacial thermo-mechanical behavior between the impinging particles and the surface of substrate just beneath them. A model of the spraying layer represented by a flat disk of 30 mm diameter and mm thickness of initially uniform temperature which is put into contact with the substrate elements is shown in Fig. 50. When .

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