.... A new idea (active aeroelasticity) reverts this approach and utilizes static instabilities to realize wing morphing instead of avoiding them. Another innovative idea (compliant systems) deals with structures designed to achieve large deformations within the elastic range of the material. Joining those...

... microelectromechanical systems off-axis stiffness compliant mechanisms elasticity micromechanical devices torsion 18 08 2009 29 03 2011 04 01 2012 04 01 2012 Torsional stiffness can be normalized by comparing it to another set of characteristic values. Using a product of actuation...

... patient access. This paper presents an MRI-compatible manipulator using elastically averaged binary pneumatic air muscles (PAMs) to orient a needle into a targeted region of the prostate under the command of a physician. The proposed manipulator is based on an all-polymer compliant mechanism designed...

.... Proc. , 2010 ( 44106 ), pp. 341 – 353 . 09 12 2010 19 07 2011 22 07 2011 15 09 2011 15 09 2011 elasticity energy conservation mean square error methods mechanical stability prototypes torsion static balancing torsion stiffness energy approach...

... in the MMOS based topology design algorithms. 15 03 2010 01 11 2010 29 12 2010 29 12 2010 beams (structures) design engineering elasticity iterative methods masks minimisation photolithography topology A fundamental objective of a single-piece and single material...

... accurate closed-form parametric load-displacement model for two-dimensional beam flexures, taking into account the nonlinearities arising from load equilibrium applied in the deformed configuration. In particular, stiffness and error motions are parametrically quantified in terms of elastic, load...

... 2010 05 08 2010 beams (structures) CAD elasticity graphical user interfaces interactive systems kinematics mechanical engineering computing compliant mechanisms spring-leverage model selection map In this paper, we present a design technique for single-input-single...

... . collision avoidance design elasticity human-robot interaction robot dynamics service robots springs (mechanical) nonlinear stiffness passive compliance physical human-robot interaction safety mechanism In recent years, service robots have received considerable attention. Because...

...Mireia Olave; Xabier Sagartzazu; Jorge Damian; Alberto Serna This paper proposes a procedure for obtaining the load distribution in a four contact-point slewing bearing considering the effect of the structure’s elasticity. The uneven stiffness of the rings and the supporting structures creates...

... ) ξ s 0 + Θ ( T − T 0 ) where D ( ξ ) is the elastic modulus, Ω ( ξ ) is the transformation modulus, Θ is related to the thermal expansion coefficient, and subscript ( . ) 0 refers to the initial state of the SMA. D ( ξ...

... constraints. Scaling guidelines are included within the optimization to relax the constraints on the solution space. Given the nonlinear nature of the spring designs, this paper further investigates their function in new configurations. Compliant structures with customized elastic properties are constructed...

...Brian T. Knox; James P. Schmiedeler This paper presents a novel series-elastic actuator (SEA) design that uses a spiral torsion spring to achieve drivetrain compliance in a compact and efficient mechanism. The SEA utilizes electromechanical actuation and is designed for use in the experimental...

... + γ d ) Effect of the thickness ratio on the joint stiffness k c for γ d < D o < ( L   tan   α + γ d ) 10 07 2008 26 08 2009 03 11 2009 03 11 2009 assembling elasticity fasteners finite element...

... elasticity, which are known to influence the dynamic behavior of drivetrain significantly. The derivation of the system governing equation by Lagrange equations requires the formulations of the kinetic energy terms of both orbiting and rotating gears, the potential energy terms of time-varying tooth...

... are substituted by groups of fewer elements called equivalent parametric macroelements (EPMs). The EPM optimum parameters are obtained using equivalence criteria based on elastic energy and inertial properties. The optimization process is performed using nonlinear least square minimization and genetic algorithms...

... angles. It is worth noting, however, that the coupling exposed above is limited by the constraints of linear elasticity, in contrast with the changes in spring geometry and stiffness due to the spring strain that emerge in a nonlinear analysis ( 5 6 ). The torsional stiffness of a helical spring also...

... . Timoshenko , S. P. , and Gere , J. M. , 1988 , Theory of Elastic Stability , McGraw-Hill , New York . Wiley , J. C. , and Genin , J. , 1970 , “ Nonlinear Static Behavior of a Cantilever Subjected to an Inclined Follower Force ,” Appl. Sci. Res. 0003-6994 , 23 , pp. 1 – 15...

... variable in which unsupported and supported states of a structure are represented with springs having limit stiffness values. Because elastically supported structures exhibit considerably different structural behaviors from structures without elastic supports, it is difficult to select an objective...

...Ali A. Alkelani; Sayed A. Nassar; Basil A. Housari A novel mathematical model is proposed for studying elastic interaction in gasketed bolted joints. The model predicts the tension changes in tightened bolts due to the subsequent tightening of other bolts in the joint. It also predicts the final...

... of the heterogeneous deformation. In the present work, joint materials are assumed to be isotropic and homogeneous, and linear elastic axisymmetric finite element analysis was performed to evaluate the member stiffness. Uniform displacement and uniform pressure assumptions are employed in idealizing the boundary...