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Effect of the concrete cover thickness ratio on the post-yield stiffness of bridge columns with partially unbonded unstressed steel strands
A new self-centering concrete bridge column has been developed by the authors. The proposed bridge column uses unstressed partially unbonded...
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Effect of temperature on post-yield behavior of PVC foams
Experiments were conducted on Divinycell HCP30 foam to develop equations predicting its elastic and post-yield behavior from − 40 to + 60 °C. In...
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Influence of Jute Reinforcement on the Stiffness Capacity of Cohesionless Pavement Geomaterials
In this work, cohesionless pavement geomaterial reinforced with multi-layers of georeinforcement as jute fibres has been studied. The present work is...
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Elastostatic Stiffness Evaluation and Optimization of Parallel Manipulators
In this chapter, we focus on the stiffness performance evaluation and optimization design of parallel manipulators (PMs), the comprehensive stiffness...
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Reducing the Flexural Stiffness Requirement for Boundary Elements in Steel Plate Shear Walls Using the Topology Optimization Method
In this research, the topology optimization method was used to decrease the significant amount of induced distributed loads on surrounding boundary...
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Unified method for typical gear failure modeling and stiffness calculation based on the matrix equation
The failure types in gear systems vary, with typical ones mainly including pitting, cracking, wear, and broken teeth. Different modeling and...
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Effect of contact stiffness on cutter flank friction and wear in milling process considering cutting vibration
In the process of high-efficient milling titanium alloy(Ti6Al4V) workpieces, the ICS (instantaneous contact stiffness) and its distribution between...
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Nonlinear lightweight metastructure with effective negative stiffness
In this paper, a new type of lightweight metastructure for vibration isolation in small devices is investigated. The metastructure contains...
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Dependency of the Accidental Torsion Building Response on Both Live-to-Dead Load Ratio and Material Stiffness Variation
Numerical simulations were performed in this work to assess the impact of the ratio of live-to-dead load ( ρ ) and the stiffness variability of the...
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Mathematical Simulation of Dynamics for Exoskeleton Including Variable-Length Links with Adjustable Stiffness
A method of composing exoskeleton dynamics equations is presented in this paper. The exoskeleton is simulated with a system of rigid bodies including...
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Semi-analytical Stiffness Model of Bolted Joints in Machine Tools Considering the Coupling Effect
This study proposes an improved semi-analytical approach for contact stiffness modeling of bolted joints in a machine tool system. First, nonlinear...
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Machine learning models for cracking torque and pre-cracking stiffness of RC beams
The torsional behavior of RC beams is a complex work involving interactions of different design parameters and mechanisms. Considering the...
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Mechanistic Analysis and Bio-inspired Applications for a Bidirectional Stiffness of a Water Snail Operculum
The water snail Pomacea canaliculata retracts the discoidal and multi-layered operculum to protect the soft body from being attacked by predators,...
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Seismic response control of an open-ground story RC frame building using the negative stiffness device
Response of the structures can be diminished by adopting the structural weakening and dam** methods. Even though these methods are found to be...
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Simulation and experiment of secondary contact stiffness of rough surface
Machined surfaces usually need to be loaded several times during assembly. The surface morphology after the simulation loading may be quite different...
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Study on transmission error and torsional stiffness of RV reducer under wear
In order to discuss the influence of wear dynamic evolution on the degradation of core transmission performance, transmission error and meshing...
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Optimization of a Quasi-zero-Stiffness Isolator via Oblique Beams
A quasi-zero-stiffness isolator is proposed via oblique beams, and negative stiffness is derived from the post-buckling effects. The restoring forces...
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Digital Twin Data-Driven Multi-Disciplinary and Multi-Objective Optimization Framework for Automatic Design of Negative Stiffness Honeycomb
The honeycomb structures perform well in shock and vibration isolation with a light weight and small material. They cannot reuse due to plastic...
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A Study on the Effect of Structural Properties and Configuration of Low-Stiffness-Resilient-Shaft (LSRS) on Torsional Behavior
The use of the Low-Stiffness-Resilient-Shaft (LSRS) in the Semi-Active-Steering (SAS) system helps remove the drawbacks of the conventional and...
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Pre-trained design optimization of variable stiffness composite cylinders modeled using Bézier curves
In this paper, a novel framework is proposed to optimize variable stiffness (VS) composite circular cylinders designed with the direct fiber path...
