Punching shear is the most common failure mechanism of slabs that are supported directly on columns. The slab–column connection always vulnerable to critical punching shear; thus, it necessary investigate effect various parameters behavior flat slabs. This work presents an experimental study evaluate level prestressing force and layout strands in terms maximum load, deflection, stiffness, ducti...

In the presented work model and experiments of compliant robots with piezo actuators are carried out. The robot is designed to perform automatic injection of cells in the range of 10-30 μm. A kinematics model of serial-parallel structures is presented. Pseudo rigid body approach is used, where the elastic joints are modelled as revolute joints. Models for tension of parallel structures with ela...

The demand for large antennas in future space missions has increasingly stimulated the development of deployable membrane antenna structures owing to their light weight and small stowage volume. However, there is little literature providing a comprehensive review and comparison of different membrane antenna structures. Space-borne membrane antenna structures are mainly classified as either para...

This study presents novel research on the seismic behavior of self-centering reduced beam section (RBS) connections in steel structures. Unlike traditional moment frames that concentrate non-elastic deformations energy dissipation devices, innovative RBS utilize post-tensioning techniques to restore structure its pre-earthquake condition. By significantly reducing residual deformations, these o...

To study the effect of local corrosion prestressed steel strands on shear failure mode and bearing capacity concrete beams, unilateral in four post-tensioning (PC) beams are corroded, test PC performed. Moreover, a simplified calculation method for with diagonal bars is proposed considering cross-sectional reduction bars, degradation mechanical properties, damage concrete. Results shows that cr...

In the last years, attention to seismic strengthening of existing buildings has increasingly grown, especially since a huge number national incentives been allocated for deep renovation building stock. Various research pushed toward new solutions suitable account entire life cycle retrofit solution and that would overcome main barriers renovation, which are, example, need relocate inhabitants. ...

This paper presents a new cable-suspended robot. It is a 7-cable spatial design with a closed-form forward pose kinematics solution. Applications include automated machining, construction, and sculpting. This paper presents two new ideas. First, an independent, passive, sixstring-pot-based Cartesian metrology system was built and tested since length measurements through the active drive system ...