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π SIMILAR VOLUMES
This paper proposes a formulation of dynamic contact problems which enables exact algorithmic conservation of linear momentum, angular momentum, and energy in ΓΏnite element simulations. It is seen that a Lagrange multiplier enforcement of an appropriate contact rate constraint produces these conserv
The possibility of protecting an orchard against cold by enclosing it under a screen cover was studied in a preliminary field test. At the onset of freezing temperatures, water was sprinkled on the screen, forming a continuous sheet of thin ice. The screen and ice cover effectively reduced heat loss
The parameter-based technique provides an efficient and valid means of constructing 3-D geometric models in many CAD software systems. However, its use is generally restricted to the design of mechanical components with regular configurations, and it is not ideally suited to product form and color d