A partial mesh replacement technique for design modification in rapid prototyping

Lai, Hou-Chuan; Lai, Jiing Yih

doi:10.1016/j.cie.2009.11.007

Cited by 2 publications

(4 citation statements)

References 28 publications

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“…This section reviews literature related to partial mesh editing, offset-based mesh editing and other literature related to thin-walled mesh model. Lai and Lai (2010) have proposed a scheme for partial mesh replacement from a mesh model during RP of a part by repeatedly going back to CAD domain, modifying it partially and converting the partially modified CAD model to STL and bringing back that partial mesh for RP. Though the approach reduces the effort partially, it still requires access to the CAD model.…”

Section: Literature Survey Definition and Terminologymentioning

confidence: 99%

“…The approaches described above are all directly related to product design and simulation. The two approaches by Lai and Lai (2010) and Wu and Sharma (2004) are directly related to mesh editing and partially reduced the burden of repeatedly faceting the whole CAD model while bringing all facets in mesh domain and building the mesh model. However, their approaches require the original CAD model.…”

Section: Literature Survey Definition and Terminologymentioning

confidence: 99%

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Direct global editing of STL mesh model for product design and rapid prototyping

Adhikary

Gurumoorthy

2017

RPJ

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Purpose This paper aims to propose an automatic and direct method to manipulate global parameters of the object for prototyping and simulation, given an STL mesh model of a thin-walled object. Proposed method is useful in rapid prototyping, where changing the global parameters such as thickness, scaling local features or draft of walls of an STL mesh is often required. Presently, user needs to iterate over the cycle of modification of the computer-aided design (CAD) model and tessellating it to change the global parameters. The proposed algorithm eliminates the need for CAD model while manipulating those global properties, as it works directly with the mesh model. Design/methodology/approach Proposed algorithm automatically identifies walls and its thickness, and then, it extracts mid-surface from each wall. Global parameters are then modified by using these mid-surfaces. Findings Mesh directly modified and the mesh obtained by tessellating modified CAD model has same global properties; proposed method can also allow multiple parameters to be modified at the same time. Research limitations/implications Input STL model is assumed to be error-free, where models containing errors like self-intersection will lead to incorrect mid-surfaces. Present algorithm assumes that the mid-surface represent of the input STL model is a manifold surface. Originality/value A novel algorithm of directly manipulating global parameters of a thin-walled object in its STL mesh model is proposed. The paper also presents a novel method of extracting mid-surface representation from a thin-wall STL mesh.

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Section: Literature Survey Definition and Terminologymentioning

confidence: 99%

Section: Literature Survey Definition and Terminologymentioning

confidence: 99%

Direct global editing of STL mesh model for product design and rapid prototyping

Adhikary

Gurumoorthy

2017

RPJ

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“…Nevertheless more sophisticated, automatic techniques are available (see e.g. [39,44,29]). Figure 2 shows the entire process on a model with all types of singularities.…”

Section: Local Computationmentioning

confidence: 99%

“…More precisely, the boundary of S ′ should be made of as many loops as the boundary of S. Finally, we merge S ′ to M\S by stitching both boundaries, using pairs of loops. Several algorithms, such as [39,44,29], can be applied to stitch boundaries. In our case we use the following simple user-assisted method, which yields satisfactory results (see Figure 14).…”

Section: Local Computationmentioning

confidence: 99%

Mesh repair with user-friendly topology control

Hétroy

Rey

Andújar

et al. 2011

Computer-Aided Design

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Limitations of current 3D acquisition technology often lead to polygonal meshes exhibiting a number of geometrical and topological defects which prevent them from widespread use. In this paper we present a new method for model repair which takes as input an arbitrary polygonal mesh and outputs a valid two-manifold triangle mesh. Unlike previous work, our method allows users to quickly identify areas with potential topological errors and to choose how to fix them in a userfriendly manner. Key steps of our algorithm include the conversion of the input model into a set of voxels, the use of morphological operators to allow the user to modify the topology of the discrete model, and the conversion of the corrected voxel set back into a two-manifold triangle mesh. Our experiments demonstrate that the proposed algorithm is suitable for repairing meshes of a large class of shapes.

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A partial mesh replacement technique for design modification in rapid prototyping

Cited by 2 publications

References 28 publications

Direct global editing of STL mesh model for product design and rapid prototyping

Direct global editing of STL mesh model for product design and rapid prototyping

Mesh repair with user-friendly topology control

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