Results 211 to 220 of about 392,474 (265)

The computation of the J integral with the traction boundary integral equation

International Journal for Numerical Methods in Engineering, 2004
AbstractThe solutions of the displacement boundary integral equation (BIE) are not uniquely determined in certain types of boundary conditions. Traction boundary integral equations that have unique solutions in these traction and mixed boundary cases are established.
Chen, Songying, Wang, Leqin, Jiao, Lei
openaire   +2 more sources

J integral computation for piezo-ceramics

Revue Européenne des Éléments Finis, 2001
Summary: Piezoceramics are brittle; they can fail untimely due to the propagation of flaws or defects produced during their manufacturing process. In this paper, we propose a numerical estimate of a \(J\)-integral generalized to electro-mechanical processes, which will prove useful in designing a propagation criterion.
Benkaci, Nadia, Maugin, Gérard
openaire   +1 more source

Integrability of J f and 1∕J f

2013
In this chapter we study the optimal degree of integrability of J f and 1∕J f for mappings of finite distortion. As an application of our estimates we show that some sets are removable singularities for mappings with exponentially integrable distortion.
Stanislav Hencl, Pekka Koskela
openaire   +1 more source

On J-integrals in the plane fracture

Applied Mathematics and Mechanics, 1990
In this-paper, we discuss J-integrals near models I and II crack tips for the plates of linear-elastic isotropic homogeneous material and orthotropic composite material, using the theories of complex function and calculus, and obtain the result as follows:
Yang Wei-yang, Zhang Shao-qin, Chen Hua-cai   +2 more
openaire   +1 more source

On a Condition of J. Ohm for Integral Domains

Canadian Journal of Mathematics, 1968
This paper originated mainly from results presented in a paper by J. Ohm (13), and, to a lesser degree, from results of Gilmer in (3). Ohm's paper is concerned with the validity of the equation (x, y)n = (xn, yn) for each pair of elements x, y of an integral domain D with identity.
openaire   +1 more source

The J-integral in flexoelectric solids

International Journal of Fracture, 2018
The flexoelectric effect is a significant electromechanical coupling phenomenon between strain gradients and electric polarization. Since the design of materials with high flexoelectricity should be accompanied with stress concentration/intensity, the strength and fracture analysis of flexoelectric materials with large strain gradients is desired.
Xinpeng Tian, Qun Li, Qian Deng
openaire   +1 more source

Time dependence of J-integral

Nuclear Engineering and Design, 1983
Abstract Tests performed within the framework of earlier RWTUV projects together with results obtained elsewhere with regard to the time dependence of fracture mechanics data show that time effects reduced the toughness of materials, according to the nature of the test (extremely slow load rate or hold times with sustained load).
H.D. Schulze, H. Fuhlrott, G. Togler
openaire   +1 more source

Decomposition of the mixed-mode J-integral—revisited

International Journal of Solids and Structures, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rigby, R. H., Aliabadi, M. H.
openaire   +2 more sources

On the path dependence of the J-integral in notch problems

International Journal of Solids and Structures, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Yi-Heng, Lu, Tian Jian
openaire   +1 more source

J-Integral Estimation Procedures

Journal of Pressure Vessel Technology, 1983
This paper presents efficient procedures for estimating the J-integral, a parameter for characterizing stable crack growth under inelastic conditions. Two different formulations are shown. The basis of the first approximate J-integral formula is the familiar extension of the elastic strain energy release rate computation for elastic-plastic loads. This
openaire   +1 more source