From measured physical parameters to the haptic feeling of fabric

Abstract real-time cloth simulation involves the solution of many computational challenges, particularly in the context of haptic applications, where high frame rates are necessary for obtaining a satisfactory tactile experience. In this paper, we present a real-time cloth simulation system that offers a compromise between a realistic physically-based simulation of fabrics and a haptic application with high requirements in terms of computation speed. We place emphasis on architecture and algorithmic choices for obtaining the best compromise in the context of haptic applications. A first implementation using a haptic device demonstrates the features of the proposed system and leads to the development of new approaches for haptic rendering using the proposed approac

Study of mechanical properties in the simulation of 3D garments

Today, impressive simulation technology is available, allowing the creation of virtual garments that look incredibly realistic. Experimental values for the mechanical fabric properties can be derived from standard fabric characterization experiments. These methods have, however, not been designed for use in simulations. This study examines the accuracy of derived fabric parameters from standard measurement methods. Therefore, fabrics are measured and derived parameters are evaluated for static and dynamic virtual garment simulation. For those measurements which are found to be unsuitable, new methods are developed. A prototyping process is developed to compare both the real and virtual processes. It is demonstrated that typical garment assessments such as comfort and utility performance can be accurately simulated. Moreover, important numerical fitting data attest a better performance in the virtual process. The new measurement specifications are leading to the establishment of new measurement standards, which are designed for virtual simulation processes

Table of contents:

1.1. Aim and Objectives.........................................................................................................

From measured physical parameters to the haptic feeling of fabric

Abstract real-time cloth simulation involves the solution of many computational challenges, particularly in the context of haptic applications, where high frame rates are necessary for obtaining a satisfactory tactile experience. In this paper, we present a real-time cloth simulation system that offers a compromise between a realistic physically-based simulation of fabrics and a haptic application with high requirements in terms of computation speed. We place emphasis on architecture and algorithmic choices for obtaining the best compromise in the context of haptic applications. A first implementation using a haptic device demonstrates the features of the proposed system and leads to the development of new approaches for haptic rendering using the proposed approach

A validation methodology and application of 3D garment simulation software to determine the distribution of air layers in garments during walking

The methods to determine air gap thickness and contact area are limited for stationary position of the manikin. In this study, 3D garment simulation software was quantitatively validated by comparing these parameters obtained from this tool with the ones obtained from accurate 3D scanning method to assess the capability of 3D garment simulation software. Moreover, for the first time, these parameters were calculated for garments on walking male avatar wearing t-shirt and sweatpants. The agreement between two methods were within a range of 23 mm and 65%, and 10 mm and 45% for the air gap thickness and contact area of upper and lower body garments, respectively. Furthermore, the adapted post-processing method could discriminate the differences in the observed parameters over the body regions and among the phases of the movement. The introduced post-processing method can be used to improve 3D garment software for the determination of the regional parameters