Assisted crack tip flipping under Mode I thin sheet tearing
نویسندگان
چکیده
منابع مشابه
Crack Tip Constraint for Anisotropic Sheet Metal Plate Subjected to Mode-I Fracture
On the ground of manufacturing, sheet metal parts play a key role as they cover about half of the production processes. Sheet metals are commonly obtained from rolling and forming processes which causes misalignment of micro structure resulting obvious anisotropic characteristics and micro cracks. Presence of micro cracks poses serious attention, when stresses at the tip reach to the critical v...
متن کاملComment on "Crack street: the cycloidal wake of a cylinder tearing through a thin sheet".
Comment on " Crack street: The cycloidal wake of a cylinder tearing through a thin sheet " A new mode of oscillatory fracture in brittle thin films has recently been reported in two independent experiments [1, 2]. When an object is driven through a thin film clamped along its lateral boundaries, the film tears following a striking sawtooth pattern, as the crack tip propagates in an oscillatory ...
متن کاملCrack street: the cycloidal wake of a cylinder tearing through a thin sheet.
When a cylindrical tool cuts through a thin sheet of a relatively brittle material, it leaves behind a visually arresting crack street in its wake, reminiscent of a vortex street in the wake of a cylinder moving through a fluid. We show that simple geometrical arguments based on the interplay of in-plane stretching and out-of-plane bending suffice to explain the cycloidal morphology of the curv...
متن کاملEffect of T-stress on Edge Dislocation Formation at a Crack Tip under Mode I Loading
We calculate the effect of the nonsingular stress acting parallel to a crack (the “Tstress”) on edge dislocation nucleation at a crack loaded in Mode I. We find that this leads to crack size effect – that is, for small cracks (of order 100 atomic spacings or less), the T stress causes the critical load for dislocation nucleation (expressed in terms of the applied stress intensity factor) to dev...
متن کاملComment on ‘‘Crack Street: The Cycloidal Wake of a Cylinder Tearing through a Thin Sheet’’ A new mode of oscillatory fracture in brittle thin films
A new mode of oscillatory fracture in brittle thin films has recently been reported in two independent experiments [1,2]. When an object is driven through a thin film clamped along its lateral boundaries, the film tears following a striking sawtooth pattern, as the crack tip propagates in an oscillatory manner. In their Letter, Ghatak and Mahadevan [1,3] make an analogy with the classical const...
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ژورنال
عنوان ژورنال: European Journal of Mechanics - A/Solids
سال: 2017
ISSN: 0997-7538
DOI: 10.1016/j.euromechsol.2017.01.009