Variational direct modeling: A framework towards integration of parametric modeling and direct modeling in CAD

Q Zou, HY Feng, S Gao - Computer-Aided Design, 2023 - Elsevier
Feature-based parametric modeling is the de facto standard in CAD. Boundary
representation-based direct modeling is another CAD paradigm developed recently. They …

A decision-support method for information inconsistency resolution in direct modeling of CAD models

Q Zou, HY Feng - Advanced Engineering Informatics, 2020 - Elsevier
Direct modeling is a very recent CAD paradigm that can provide unprecedented modeling
flexibility. It, however, lacks the parametric capability, which is indispensable to modern CAD …

A review on geometric constraint solving

Q Zou, Z Tang, HY Feng, S Gao, C Zhou… - arXiv preprint arXiv …, 2022 - arxiv.org
This paper presents a comprehensive review of geometric constraint solving in parametric
computer-aided design (CAD), with the major focus on its advances in the last 15 years …

Variational B-rep model analysis for direct modeling using geometric perturbation

Q Zou, HY Feng - Journal of Computational Design and …, 2019 - academic.oup.com
The very recent CAD paradigm of direct modeling gives rise to the need of processing 3D
geometric constraint systems defined on boundary representation (B-rep) models. The major …

Geometric over-constraints detection: a survey

H Hu, M Kleiner, JP Pernot, C Zhang, Y Huang… - … Methods in Engineering, 2021 - Springer
Currently, geometric over-constraints detection is of major interest in several different fields.
In terms of product development process (PDP), many approaches exist to compare and …

Defining tools to address over-constrained geometric problems in Computer Aided Design

M Moinet, G Mandil, P Serré - Computer-Aided Design, 2014 - Elsevier
This paper proposes a new tool for decision support to address geometric over-constrained
problems in Computer Aided Design (CAD). It concerns the declarative modeling of …

A note on solid modeling: history, state of the art, future

Q Zou - arXiv preprint arXiv:2302.14373, 2023 - arxiv.org
Solid modeling is a technique underlying CAD software as we see it today, and its theories
and algorithms are among the most fundamental milestones in the historical development of …

Decomposition of geometrical constraint systems with reparameterization

P Mathis, P Schreck, R Imbach - Proceedings of the 27th annual ACM …, 2012 - dl.acm.org
Decomposition of constraint systems is a key component of geometric constraint solving in
CAD. On the other hand, some authors have introduced the notion of reparameterization …

Coordinate-free geometry and decomposition in geometrical constraint solving

P Mathis, P Schreck - Computer-Aided Design, 2014 - Elsevier
In CAD, a designer usually specifies mechanisms or objects by the means of sketches
supporting dimension requirements like distances between points, angles between lines …

On limitations of the witness configuration method for geometric constraint solving in cad modeling

Q Zou, HY Feng - arXiv preprint arXiv:1904.00526, 2019 - arxiv.org
This paper presents discussions on the limitations of the witness configuration method.
These limitations have rarely been reported in previous studies. The witness configuration …