AHFE Open AccessContact Pressure as an Indicator of Postural Stability in Digital Human Models
Abstract
This paper presents a natural stability model of Digital Human Models. In the traditional convex-hull-based stability approach, a posture is stable if the Center of Pressure lies within the Base of Support. The posture has no qualitative degree (less/more stable). Additionally, some existing methods use Functional Stability Regions and make the Centre of Pressure lie inside it. Though, this is based solely on experimental observation and lacks reasoning. Hu-mans sense contact/reaction forces. Very low contact pressure may provoke toppling, and high contact pressure induces discomfort. So, humans do not allow forces to rise beyond or recede below certain limits. In this paper, a Sensing-based method that involves estimating pressure at support points is presented to decide whether a posture is stable & comfortable along with its degree. The method provides a rationale for using the Functional Stability Region & applies to any set of support points.
Keywords: Generalized Mean Value coordinates (GMV), Stability, Convex Hull, Star Polygon, Centre of Pressure, Base of Support (BOS), Barycentric Coordinates
DOI: 10.54941/ahfe1001901
Cite this paper
More from this volume
- Three-dimensional Scalp Shape Prediction from Face and Neck Shapes
- Demonstrating the Value of 3D Models to Support Large-Scale Digital Modifications at Nuclear Power Plants
- A Proactive Ergonomics Framework to Assess A-Pillar Vision Obstruction
- Methodology Based on 3D Thermal Scanner and AI Integration to Model Thermal Comfort and Ergonomics.
- Orthogonal Curve Analysis of Human Scalp Shape
- Theoretical Framework for the Sizing of Body Armor Plates to Optimize Fit
- A Novel Methodology for Evaluating Military Teamwork and Team Marksmanship Performance
- Changes on Foot Dimensions with Elevated Heel Heights: A Pilot Study
- Precision of Marker-Based Finger Tracking for Broad Biomechanical Studies Using 6DOF Targets.
- Application of Brain-Computer Interface for Disabled People on Human Factors Engineering
- Collecting Data for Digital Human Modeling during the COVID-19 Pandemic
- Action Research Arm Test with Multisensory Information