The equivalent bending stiffness is presented while the conical inflated beam equates to cylindrical inflated beam, according to the deflection formula of beam, the model of equivalent bending stiffness of conical inflated beams is obtained. Comparing the equivalent bending stiffness of conical inflated ...
The soil reaction matrix is added to beam element stiffness matrix, and modified beam element stiffness matrix is formed. At last, the matrix equation for analyzing elastic foundation beam is held up by the equilibrium of node forces. 展开 关键词: elastic foundation beam elastic line foundation ...
The stiffness at the axis of rotation is five times that at the center. The governing bending moments and reaction forces are given in Figure 17.34. Sign in to download full-size image Figure 17.34. Bending moments of a double bascule bridge: (a) Permanent loads, (b) traffic, (c) perman...
There exists a best bending angle to obtain the highest stability. The increase of torsional stiffness will lead to the increase of the lateral stability for upwards-bent beam, but reduce the lateral stability for downwards-bent beam. 展开 关键词:...
In order to circumvent the problem arising from the ordinary and singular element in three-point and four-point bending beams with crack,a Williams element with generalized degrees of freedom(GDOFs) is presented for the calculation of stress intensity factor(SIF).The stiffness equation of ordinary...
Applying this same force to the end of the other beams causes them to deflect 1/110″ and 1/409″, respectively: The bending stiffness of these beams is 110 × and 409 × greater than the top laminate. This huge increase in stiffness only costs a very modest increase in weight. Sign ...
The ultimate bending strength of beam-column rigid connections is a key point ensuring structural safety of earthquake-resistant moment-frames under strong earthquakes. The ultimate bending strength of beam-column connections is discussed taking H-section as case. Based on a comparison of GB 50011 co...
Biomimetic scales provide a convenient template to tailor the bending stiffness of the underlying slender substrate due to their mutual sliding after engagement. Scale stiffness can therefore directly impact the substrate behavior, opening a potential avenue for substrate stiffness tunability. Here, we hav...
governing equation is derived for the radial displacement of the outer beam.With adequate boundary conditions this equation is solved analytically.The equivalent stiffness of the crashworthy structure is deduced from this solution,and the influences of structural parameters on this stiffness are also ...
The differential equation (1) is a mathematical model of the bending of the Euler–Bernoulli beam. The boundary conditions (2) define the clamping of the beam at both ends, relations (3) and (4) represent the conditions of given sliding friction, and relations (5) and (6) are the condi...