Interactive Deformation Through Mesh-Free Stress Analysis in Virtual Reality

Abstract

Virtual reality (VR) techniques are used to create an environment that allows an engineer to modify the shape of a part and see the changes in the stress state immediately. A virtual reality application, Interactive Virtual Design Application (IVDA), that allows fast mesh-free analysis of multiple element types, including twodimensional (2D) elements, is described in detail. Taylor series approximations and Pre-conditioned Conjugate Gradient (PCG) methods are used with mesh-free analysis to perform quick reanalysis during interactive shape modification. Prior to this work, only 3D elements were incorporated into the method. The addition of 2D elements greatly expands the potential application of this work. Several software packages including VR Juggler, OpenHaptics, OPCODE, Tahoe and OpenGL/GLM/GLUT libraries are combined in the resulting application to handle a variety of elements. This approach also supports concurrent product design and assembly methods prototyping. The addition of 2D analysis capability is discussed in this paper. The method is described and a sample problem presented. ABSTRACT Virtual reality (VR) techniques are used to create an environment that allows an engineer to modify the shape of a part and see the changes in the stress state immediately. A virtual reality application, Interactive Virtual Design Application (IVDA), that allows fast mesh-free analysis of multiple element types, including two-dimensional (2D) elements, is described in detail. Taylor series approximations and Pre-conditioned Conjugate Gradient (PCG) methods are used with mesh-free analysis to perform quick reanalysis during interactive shape modification. Prior to this work, only 3D elements were incorporated into the method. The addition of 2D elements greatly expands the potential application of this work. Several software packages including VR Juggler, OpenHaptics, OPCODE, Tahoe and OpenGL/GLM/GLUT libraries are combined in the resulting application to handle a variety of elements. This approach also supports concurrent product design and assembly methods prototyping. The addition of 2D analysis capability is discussed in this paper. The method is described and a sample problem presented.

Extended Reality (XR) for Condition Assessment of Civil Engineering Structures: A Literature Review

“…There are various use cases of VR, AR, and MR in the AEC industry and they are shown in Figure 8 . Generally, the use cases of VR, AR, and MR in the AEC industry can be classified as follows: heritage preservation [ 68 , 69 , 70 ]; design, analysis, and modeling [ 71 , 72 , 73 , 74 ]; training and education [ 43 , 75 , 76 , 77 ]; construction activities [ 78 , 79 , 80 , 81 , 82 ]; others (e.g., building energy efficiency, emergency and disaster management) [ 60 , 83 , 84 , 85 ]; and structural condition assessment (studies are presented in the following subsections). Some use cases have more defined boundaries as they [ 43 , 75 , 76 , 77 ] do not cross into other use cases such as training and education.…”