This paper examines the effects of radiation pressure and triaxiality two stars (primaries) surrounded by a belt (circumbinarydisc)onthepositionsandstabilityofathirdbodyofaninfinitesimalmassintheframeworkoftheEllipticrestricted three body problem (ER3BP). We have obtained analytical solutions to triangular equilibrium points their stability also investigated these numerically graphically using ...

We generate stellar distribution functions (DFs) in triaxial haloes in order to examine the reliability of slopes Γ ≡ ∆logM/∆logr inferred by applying mass estimators of the formM ∝ Reσ 2 (i.e. assuming spherical symmetry, where Re and σ are luminous effective radius and global velocity dispersion, respectively) to two stellar sub-populations independently tracing the same gravitational potenti...

We study the statistics of large-separation gravitational lens systems produced by non-spherical halos in the Cold Dark Matter (CDM) model. Specifically, we examine how the triaxiality of CDM halos affects the overall lensing probabilities and the relative numbers of different image configurations (double, quadruple, and naked cusp lenses). We find that triaxiality significantly enhances lensin...

In this paper, the deformation law of box-shaped parts drawing was analyzed, and mathematical expression for calculating critical fracture blank holder force (BHF) deduced. order to determine parameters 08Al sheet, notched specimen tensile tests were conducted, full-field strain specimens from obtained by digital image correlation (DIC) technology. The evolution stress triaxiality Lode paramete...

The ductile fracture behavior of a high strength steel is addressed in this two-part study using micromechanics-based approach. objective Part II to propose, identify, and validate numerical model based on the Gurson–Tvergaard–Needleman model. This enhanced by Nahshon–Hutchinson shear modification combination with generalization Thomason coalescence criterion within fully nonlocal form relying ...

Abstract This paper investigates the influence of stress state on equivalent plastic fracture strain in 2024-T351 aluminum alloy. Eighteen unique states at failure—with triaxialities ranging from 0.388 (compressive) to −0.891 (tensile) and Lode parameters −0.978 1.000—are explored through mechanical experiments specimens with various geometries under multiple loading conditions. These include t...

Transformation induced plasticity (TRIP) steels present a remarkable balance of strength and ductility. However, their post-necking hardening behavior, which is required for press-forming automobile crash simulation, unreliable because stress-triaxiality dependency. Therefore, we analyzed the in strain regions tensile loaded TRIP steel to accurately evaluate stress distribution. Tensile tests w...

Welding joint is a key component in steel structure engineering, which often subjected to complex stress and becomes the weak link of building structure, different fracture modes may appear under stress. In this study, ductile Q345 welded was investigated by selecting base material heat-affected zone (HAZ) material. Based on J–C (Johnson–Cook) model triaxiality factor, series round bar specimen...

The available stock of the material is very often insuffi cient to machine conventional specimens and conduct tests according to ASTM Standards. Specially, it is diffi cult to meet the specimen size requirements, such as thickness or planar width, and estimate fracture toughness of high strength materials by means of KIc, JIc, or CTOD. A Local Approach to Fracture is an alternative methodology ...