New Micromechanical Model for Predicting Biaxial Tensile Moduli of Plain Weave Fabric Composites J B Bai, J J Xiong*, Q Wang School of Transportation Science and Engineering, Beihang University, Beijing, 100191, People’s Republic of China (*, corresponding author: [email protected]) Abstract: This paper addresses a new micromechanical model to predict biaxial tensile moduli of plain weave fab...

In this paper, we explore three different ways of developing T-Trefftz finite elements of quadrilateral as well as polygonal shapes. In all of these three approaches, in addition to assuming an inter-element compatible displacement field along the element boundary, an interior displacement field for each element is independently assumed as a linear combination of T-Trefftz trial functions. In a...

Electrostatic force feedback loops are commonly used for measurement and position control in micromechanical sensors and actuators. They are widely implemented with switched capacitor, sigma-delta(WA) architectures as they provide perfect compatibility with capacitive sensing methods. The electromechanical subsystem, as a vital part of a C/A-loop, strongly influences the loop characteristics. I...

High-frequency silicon columnar microresonators are fabricated using a simple but effective technological scheme. An optimized fabrication scheme was invented to obtain mechanically protected microcolumns with lateral dimensions controlled on a scale of at least 1 μm. In this paper, we investigate the influence of the environmental conditions on the mechanical resonator properties. At ambient c...