Partner: X.-P. Shen


Ostatnie publikacje
1.Xin-pu S., Mróz Z., Bing-ye X., Constitutive theory of plasticity coupled with orthotropic damage for geomaterials, APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION, ISSN: 0253-4827, DOI: 10.1007/BF02438321, Vol.22, No.9, pp.1028-1034, 2001

Streszczenie:

Constitutive theory of plasticity coupled with orthotropic damage for geomaterials was established in the framework of irreversible thermodynamics. Prime results include: 1) evolution laws are presented for coupled evolution of plasticity and orthotropic damage; 2) the orthotropic damage tensor is introduced into the Mohr-Coulomb criterion through homogenization. Both the degradation of shear strength and degradation of friction angle caused by damage are included in this model. The dilatancy is calculated with the so-called damage strain.

Słowa kluczowe:

damage plasticity, coupling, dilatancy, geomaterial

Afiliacje autorów:

Xin-pu S.-other affiliation
Mróz Z.-IPPT PAN
Bing-ye X.-other affiliation
2.Xin-pu S., Mróz Z., Shear beam model for interface failure under antiplane shear (I)-Fundamental behavior, APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION, ISSN: 0253-4827, DOI: 10.1007/BF02459242, Vol.21, No.11, pp.1221-1228, 2000

Streszczenie:

The propagation of interlayer cracks and the resulting failure of the interface is a typical mode occurring in rock engineering and masonry structure. On the basis of the theory of elastoplasticity and fracture mechanics, the shear beam model for the solution of interface failure was presented. The concent of ‘cohesive crack’ was adopted to describe the constitutive behavior of the cohesive interfacial layer. Related fundamental equations such as equilibrium equation, constitutive equations were presented. The behavior of a double shear beam bonded through cohesive layer was analytically calculated. The stable propagation of interface crack and process zone was investigated.

Słowa kluczowe:

interface layer, cohesive layer, anti-plane shear, shear beam model, failure, instability, damage

Afiliacje autorów:

Xin-pu S.-other affiliation
Mróz Z.-IPPT PAN
3.Xin-pu S., Mróz Z., Shear beam model for interface failure under antiplane shear (II)— Instability, APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION, ISSN: 0253-4827, DOI: 10.1007/BF02459243, Vol.21, No.11, pp.1229-1236, 2000

Streszczenie:

Based on the (I) of the present work, the behavior of shear beam model at crack initiation stage andat instable propagation stage was studied. The prime results include:1) discriminant equation which clarifies the mode of instability, snap-back or snap-through, was established;2) analytical solution was given out for the double shear beam and the load-displacement diagram for monotonic loading was presented for a full process; and3) the problem of the energy release induced by instability was discussed.

Słowa kluczowe:

interface layer, antiplane shear, failure, shear beam model, instability, snapthrough, snap-back, damage

Afiliacje autorów:

Xin-pu S.-other affiliation
Mróz Z.-IPPT PAN