Influence of Hole Distribution on
Macroscopic Mechanical Behavior of Perforated Materials
Zhang Hou quan(1,2),Tang Chun an(1),Song Li(1),Ma Tian hui(1)
(1 Research Center for Numerical Test on Material Failure, Dalian University, Da
lian, 116622, China)
(2 School of Civil and Environmental Engineering, Nanyang Technological University,
Singapore, 639798, Singapore)
Abstract: Material Failure Process Analysis
(MFPA2D) code adopted to discuss the influence of hole distribution on the
macroscopic mechanical behavior and failure mechanism of perforated materials from the
viewpoints of microscopic mechanics and damage mechanics. Three types of numerical models
containing two holes, four holes and multi-holes are
established. Two holes in the square specimens are respectively placed in overlapping mode
along the vertical central line, in paratactic mode along the horizontal central line and
in diagonal mode along the diagonal line. Four holes are in square and rhombic forms
located in the central zone of specimens. The multi-holes
in rows are embedded in the specimens to make the neighboring four holes like the square
and rhombic modes, then, specimen s are subjected to standard uniaxial compressive
numerical tests. The results in dicate that the interaction between holes strengthens of
weakens the stress conc entration. The load-bearing
capacity of specimens in the square mode of hole distribution is higher than that in the
rhombic mode of hole distribution. The ductile fracture behavior of perforated materials
is attributed to the jointed effects of the shielding actions and local damage behavior
near the holes.
Keywords: hole distribution, perforated materials, mechanical behavior,
numerical tests.