In this study, we introduced a simple method to determine the moment of inertia using a dynamometer. In order to evaluate the developed method, one male was required to test for his forearm including the hand on a dynamometer. In the process of finding moment of inertia, three different passive speeds, i.e. 240°/s, 270°/s, and 300°/s, were performed to confirm whether the calculated values at t...

We investigate the problem of minimizing the moment of inertia among convex surfaces in R having a specified surface area. First we prove a minimizing surface exists, and derive a necessary condition holding at points of positive curvature. Then we show that an equilateral triangular prism is the optimal triangular prism, that the cube is the optimal rectangular prism, and that the sphere is (l...

In 2 experiments, participants haptically estimated length and heaviness of handheld rods while wielding without seeing them. The sets of rods had been constructed such that variation of static moment and the 1st eigenvalue of the inertia tensor (I1) were separated. Consistent with previous findings, perceived rod length correlated strongly with I1. However, multiple regressions on current data...

The moment of inertia of the pulsar A in the neutron star binary J0737-3039 will soon be measurable through detailed measurements of the periastron advance. We present the calculation of the moment of inertia of neutron stars with the masses of the components of the binary J0737-3039 for a broad range of equations of state of dense matter and discuss the implications of such measurement for con...

It has been suggested that the inertia tensor governs many instances of haptic perception. However, the evidence is inconclusive because other candidate mechanical parameters (i.e., invariants) were not or were insufficiently controlled for in pertinent experiments. By independently varying all candidate mechanical parameters, the authors were able to test the role of the inertia tensor relativ...

How does the magnitude of the exploration force influence the precision of haptic perceptual estimates? To address this question, we examined the perceptual precision for moment of inertia (i.e., an object's "angular mass") under different force conditions, using the Weber fraction to quantify perceptual precision. Participants rotated a rod around a fixed axis and judged its moment of inertia ...

The potential of buckling in compressive members has been considered as a disadvantage when using steel members in the construction industry. In spite of the progress made in this regard, buckling is still considered as a challenge in the analysis and design of compressive steel structural members. Such a challenging phenomenon can be controlled by strengthening of compressive members. Stiffene...

When compressed axially, cancellous bone often fails at an oblique angle along well-defined bands, highlighting the importance of cancellous bone shear properties. Torsion testing to determine shear properties of cancellous bone has often been conducted under conditions appropriate only for axisymmetric specimens comprised of homogeneous and isotropic materials. However, most cancellous bone sp...

Drive-train bench system is utilized to test powertrain components of a vehicle such as transmission, torque converter, etc. In order to simulate the real vehicle motion, it is necessary that dynamometers of the drive-train bench simulates the various road conditions such as dry road surface and snow road surface, etc. To simulate the condition that the vehicle is running on the dry road, it is...