impact load

impact load

[′im‚pakt ‚lōd]
(engineering)
A force delivered by a blow, as opposed to a force applied gradually and maintained over a long period.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

impact load

The dynamic effect on a structure, either moving or at rest, of a forcible momentary contact of another moving body.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Moreover, the rock became sensitive to the impact load. When the loading reached the sixth stress level (79.6 MPa), perturbation impact was carried out after two days' creep.
The blasting demolition at the top of underground, chemical explosion devised by terrorism, gas pressure extrusion, and release of shallow layer containing gas and so forth will result in instant huge impact load on the structure of tunnel lining.
It was noticed that when mixing unidirectional and woven-fabric layers, the overall failure is dramatically decreased when subjected to impact load, suggesting that mixed composites are more resistant to impact damage.
The interaction problem of reinforced concrete (RC) slab with shock impact load leads to more or less efficient methods for solving the motion equation, for example using mathematical model based on the approach derived in HEMP-3D by Wilkins [1] and used of the three-dimensional Lagrange processor in the explicit dynamics capabilities of ANSYS [2].
Some 250 papers consider such topics as modeling and simulating a nonlinear combination disc-spring vibrator isolator for high-speed presses, thermal deformation in a dry gas seal, kerosene-based magnetic fluid used in magnetic fluid inclination sensor, the dynamic response of a mine rescue chamber under axial impact load, effects of surface relaxation on characteristics of nano-machined surface, applying constructed wetland technology in urban landscape designs, optimizing laser welding fillet joints using the response surface method, and the rural land transfer system.
This might because that the diatomite particles may generate stress concentration in the matrix around them to produce shear yield and absorb plastical impact deformation energy, in addition to induce crazes in the matrix around them under impact load when the filler concentration is low, these crazes may absorb impact deformation energy and block the further development of the micro-cracks, resulting in improving considerably the impact fracture toughness of these composite systems.
An ultra high-strength bolt-on steel cross member is manufactured via a flexible rolling process that allows the thickness to vary--the outer edge thickness is greater than the inner section--for better impact load management.
Employing the developed FE model, dynamic responses of the cracked DP are investigated under each elementary impact load, and the inertial effects of the impact loading on the dynamic SIFs are evaluated.
"Knowing that vitamin D deficiency can lead to negative calcium balance, low bone mineral density and quality leading to compromised bone strength, it makes sense for patients to be more susceptible to fractures at lower impact load and more susceptible to greater severity when fractures do occur," Hosseinzadeh added.
[9] established a numerical model, and the results indicate that the initial assembling state change is caused by the impact load. Liu et al.
According to the aforementioned statistics, the investigation of the biomechanical responses of a flexible pelvis model under lateral impact load to reveal the mechanism of bone fracture is the main motivation of this study.