After comparing the results obtained from the differently treated wings of the damselflyI. elegans, a significant difference was found only between the damping ratio of the untreated (nat.) specimens and those that were fixed at their hinge (fix.) (forewing:N = 71,P < 0.001, Krusk...
In so doing, damping the kinetic and stored elastic energy is essential for maximum points. Failure to fully dissipate the energy will cause the gymnast to stumble forward at the end of the routine (final image), something commonly seen. This dramatic braking is achieved through muscle energy ...
It is known that damping is higher for low-frequency global modes and lower for high-frequency local modes21. Therefore, a damping value of 10% of critical damping was applied for the frequency range below 200 Hz, and Rayleigh damping was applied for the range above that frequency, with ...
The neural network learning process covers several critical stages that significantly affect their effectiveness and efficiency. Initially, data preprocessing is fundamental that implies cleaning, normalizing, and transforming unprocessed data into an adequate format for training. According to Choi et al. [...
Buckling analysis is a technique used to determine buckling loads (critical loads at which a structure becomes unstable) and buckled mode shapes (the characteristic shape associated with a structure's buckled response).屈曲分析是确定屈曲载荷(结构失稳的临界载荷)和屈曲模态振型(屈曲载荷响应下的特征振型...
The quantification of damping is described later in this lab, but it is important to note that at this point, not much is known about these mechanisms from either a theoretical or practical standpoint. A useful concept is to visualize the critical damping coefficient (ccr), which corresponds ...
Longitudinal compliance is the key to safely and sustainably joining a vascular graft composite with natural arteries, and it also minimizes damping across the joint. The structural and material properties at the suture connections must be well matched to prevent intimal hyperplasia. A mismatch in com...
Force–current ratio [N/A] α1 20 Stribeck velocity [m/s] vs 0.0362 Voltage–velocity ratio [V ms−1] α2 20 Viscous damping coefficient [N s/m] r 104.5 Armature assembly mass [kg] ma 2.7 Equivalent spring stiffness [N/m] keq 3.6×104 Shaker stiffness [N m−1] ka 106.59 Ex...
Nanoporous amorphous carbon nanopillars with lightweight, ultrahigh strength, large fracture strain, and high damping capability Simultaneous achievement of lightweight and high strength is challenging. Here, authors combine self-assembly of nanoscale block copolymer and carbonization to create nanoporous amorp...
An efficient thermal-structural numerical solver for Additive Manufacturing has been developed based on a modified Lagrangian approach to solve the energy conservation equations in differential form. The heat transfer is modeled using the finite differen