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We believe that the future of human body testing in military and civilian applications is in using a new generation of “dummies” - “virtual humans”. CFDRC's CMB (Computational Medicine and Biology) research group has developed an integrated bioinformatics software framework for intelligent analysis of biomedical databases, generation of geometrical models for simulations, and modeling setup for human biomechanical and physiological performance. The integrated 3D Java based software framework is a fully user-interactive Virtual Body framework for creation and editing the Virtual Body and acting as a front end for multi-scale anthropometry/anatomy physics based simulation software. This paper presents a software framework for visual manipulation and processing of human body anthropometric, skeletal, joint, skin, vascular and other anatomical databases.

Biomechanical analysis of skeletal muscles is an important task in digital human systems. The standard finite element method (FEM) can be used for muscle analysis; however, a full-scale FEM model can be overly complicated in a digital human system. In this work, we describe an efficient method of muscle analysis. The method is a combination of the Non-Uniform Rational B-spline (NURBS) geometric representation and the Galerkin methods. The basic idea is to establish the discrete equations of motion on the basis of NURBS geometry directly, without resorting to additional meshing. The method can adequately model muscle motion and stress while keeping the model size and complexity at a tractable level. As the first step towards interactive stress analysis in a digital human, we have developed NURBS FEM model for isolated muscles in human upper limb.