Abstract In this study, the response of ten composite post-tensioned concrete beams topped by a reinforced deck with adequate reinforcing shear connectors is investigated. Depending on compressive strength slab (20, 30, and 40 MPa), are grouped into three categories. Seven these exposed to fire attack 700 800 °C temperature simultaneously or without presence uniformly distributed sustained stat...

An episodic unsupervised learning simulation using the Q-Learning method is developed to learn the optimal shape and shape change policy for a problem with four state variables. Optimality is addressed by reward functions based on airfoil properties such as lift coefficient, drag coefficient, and moment coefficient about the leading edge representing optimal shapes for specified flight conditio...

Accurate determination of vehicle’s lateral behavior is necessary in the domain of vehicle dynamics and more particularly in the context of improvement of vehicle safety. Thus, a cutting-edge knowledge of its interaction with the road surface is primordial. In consequence, the integration of a force model, representing the tire/ground interface, into the global vehicle model is needed. The vali...

To obtain a full understanding of the aerodynamics of animal flight, the movement of the wings, the kinematics, needs to be connected to the wake left behind the animal. Here the detailed 3D wingbeat kinematics of bats, Glossophaga soricina, flying in a wind tunnel over a range of flight speeds (1-7 m s(-1)) was determined from high-speed video. The results were compared with the wake geometry ...

This paper introduces the realization and wind tunnel testing of a novel variable camber wing equipped with compliant morphing trailing edges. Based on aerodynamic shape mechanisms that were optimized in advance, model called mTE4 was developed, which rigid leading edge, box, edge manufactured by 3D printing technology using three different materials. Due to difficulties detailed design small-s...

This paper aims to numerically validate the aerodynamic performance and benefits of variable camber rate morphing wings, by comparing them conventional ones with plain flaps, when deflection angles vary, assessing their D reduction or L/D improvement. Many morphing-related research works mainly focus on design mechanisms using smart materials, innovative mechanism designs through materials stru...

a nonlinear model consisting “yaw, roll, longitudinal, lateral and pitch” has been developed in which, tire and suspension characteristics have been considered. tire model is based on the elliptic concept and tire calspan data. according to this tire model, cornering force and aligning moment are computed as a function of slip and camber (inclination) angles, normal load, tire adhesion characte...

Morphing aircraft structures usually introduce greater compliance into aerodynamic sections, and therefore will affect the aeroelasticity with potential risk of increased flutter. A low-fidelity model an active camber morphing wing its aeroelastic are developed in order to investigate critical speed by exploiting chord-wise dimension flexibility. Such a may be used for conceptual design, where ...