This work investigates a new error source for angular velocity or attitude-based transfer alignment, which is caused by the coupling influence of dynamic flexure with ship angular motion. Most traditional studies do not consider this coupling error, as they often assume that dynamic flexure and ship angular motion are uncorrelated. However, the correlation between the dynamic flexure and the sh...

Design aids in the form of load tables or span are well known to engineers and commonly used timber steel design. Such reduce need for repetitive calculation allow easy ‘what-if’ queries during They also permit rapid communication minimum design requirements. This paper demonstrates an approach developing full culm bamboo elements compression flexure. The based on provisions ISO 22156:2021 most...

This paper presents the design of a selective-actuation flexure parallel mechanism that can provide three de-coupled micro-motions along the X-, Y and Z-axes. This mechanism can be used as an ultra-precision positioning system. The modeling of this flexure parallel mechanism is then established based on a pseudo-rigid-body model with consideration of deformation of the flexure member. The facto...

Fracture-based models commonly use a characteristic length as the basis for determining size effects in concrete beams. The is related to fracture process zone and defined terms of properties. Semi-empirical constants are then developed accommodate any unidentified (geometric or crack bridging) parameters. However, reliance on semi-empirical factors can limit applicability different systems, co...

Torsional dynamic analysis of carbon nanotubes under the effect of longitudinal magnetic field is carried out in the present study. Torque effect of an axial magnetic field on a carbon nanotube has been defined using Maxwell’s relation. Nonlocal governing equation and boundary conditions for carbon nanotubes are obtained by using Hamilton’s minimum energy principle. Eringen’s nonlocal stress gr...

Article history: Received 12 January 2016 Received in revised form 26 May 2016 Accepted 27 May 2016 Available online 31 May 2016 A fundamental scientific question is, what controls the Earth's topography? Although the theoretical principles of isostasy, flexure, and dynamic topography arewidely discussed, the parameters needed to apply these principles are frequently not available. Isostatic fa...

This paper focuses on the complex design process of planar compliant mechanisms with flexure hinges. In the following a systematic methodology of the transition from lever mechanisms generated intuitively by the developer or non-intuitively by topology optimization to applicable compliant mechanism is presented. An extended pseudo-rigid-body model (PRBM) is used for the analysis and the modific...

The use of Engineered Cementitious Composites (ECC) for structural design requires a number of assumptions of the material, some of which can be drastically different from those suitable for normal concrete and tension-softening fiber reinforced concrete. This contribution focuses on design assumptions of the constitutive models of ECC in tension and compression. Specifically, while the tensile...

In this work, we applied Chebychev spectral collocation method to analyze the unsteady two-dimensional flow of nanofluid in a porous channel through expanding or contracting walls with large injection or suction. The solutions are used to study the effects of various parameters on the flow of the nanofluid in the porous channel. From the analysis, It was established that increase in expansion r...