The design of gridshells is subject to strong mechanical and fabrication constraints, which remain largely unexplored for non-regular patterns.
After revisiting the 'classical' geometric criteria used in the literature, based on the angle between the structural boundary and the build direction, we propose a new mechanical constraint functional, which mimics the layer by layer construction process featured by additive manufacturing technologies, and thereby appeals to the physical origin of the difficulties caused by overhangs.
Due to the performance and certification criteria, complex mechanical systems have to taken into account several constraints, which can be associated with a series of performance functions.
In this research, a new layout optimization method is developed to consider high cycle fatigue constraints which occur due to variable amplitude mechanical loading.
A ply termination algorithm is then employed to develop permissible tapered designs, with single-ply terminations and ply contiguity constraints, which are free from undesirable changes in mechanical coupling characteristics.
There are path constraints, which limit the permitted moves.
The main and most serious symptom reported by COPD is dyspnea as a consequence of the mechanical constraints of the obstructive ventilatory defect, which increase during exercise leading to physical inactivity and handicap [ 2– 4].
In contrast, conventional cameras rely on pan-tilt motors, which are limited by mechanical constraints and produce motion blur.
At the same time, theoretical and numerical topology optimization tools can be used to simulate structures with complex shapes which exactly meet the mechanical constraints while requiring as little material as possible.
Optoelectronic systems which depend on the retention of the polarisation specific nature of components restrict the mechanical constraints on their manipulation and bonding, to avoid stresses which could destroy the polarisation specificity of the component.
