Biography:

One of their most recent publications is Stability of variable stiffness composite laminates under compressive and shearing follower forces. Which was published in journal Composite Structures.

More information about Mehnaz Rasool research including statistics on their citations can be found on their Copernicus Academic profile page.

Mehnaz Rasool's Articles: (3)

Stability of variable stiffness composite laminates under compressive and shearing follower forces

AbstractDynamic stability characteristics of variable stiffness composite rectangular panels subjected to non-conservative compressive or shear follower loads are investigated here using the shear-deformable finite element method. At the beginning, the veering of modal frequencies are studied by the eigenvalue analysis to classify the divergence and flutter type of instabilities and evaluate the critical loads for isotropic and variable stiffness composite plates under both types of follower forces. Thereafter, the governing finite element equations are reduced into a set of Mathieu-Hill equations employing the modal transformation technique and the method of multiple scales is used to determine the regions of instability of composite laminates under pulsating follower forces. Limited numerical examples are presented to demonstrate the simple and combination (additive/difference) type of parametric instabilities of edge supported and cantilever panels with curvilinear fibers under compressive or shear pulsating follower forces.

Full length articleA finite element study on the nonlinear behavior of rectangular shear panels

Highlights•Nonlinear stability behavior of shear panels with various boundary conditions is investigated.•In-plane shear in rectangular plates develops a compression strip.•The buckling strength of composite shear panels depends on the flexural rigidity along the compression strip.•The lateral and torsional buckling of eccentrically loaded cantilever shear panels are examined.•The stability characteristics of shear panels under combined in-plane shear and compressive load are investigated.

Stability behavior of variable stiffness composite panels under periodic in-plane shear and compression

AbstractDynamic stability characteristics of variable stiffness composite plates under periodic in-plane loads are investigated here using a shear-deformable sixteen-node plate bending element. The modal transformation technique is used to reduce the equations of motion for the flexural vibration problem of a rectangular panel into a set of Mathieu-Hill equations. The diagonal and off-diagonal dominance of the parametric coefficient matrix is studied for the representative cases of in-plane loading, i.e., periodic compression/shear in presence or absence of static compression for the isotropic and composite plates. The multi-modal response (participating and accompanying modes) of the shear panels under periodic edge traction is demonstrated through the time history analysis. Then, the method of multiple scales is used to identify the dynamic instability regions corresponding to the simple (single mode flexural vibration) or combination (two mode flexural vibrations) type of resonances in various (isotropic and laminated composite made of straight or curvilinear fibers) shear panels, for which results are not available in the literature.

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