...Lifeng Wang; Christine Ortiz; Mary C. Boyce The force-depth behavior of indentation into fibrillar-structured surfaces such as those consisting of forests of micro- or nanoscale tubes or rods is a depth-dependent behavior governed by compression, bending, and buckling of the nanotubes. Using...

... delamination buckling of the compressed part occurs. The relation between the magnitude of the applied load and the deflection at the point of load application is found to be nearly bilinear. The validity of this prediction is confirmed by experiments. It is also shown that once the delamination buckling...

...Hui-Shen Shen Compressive post-buckling under thermal environments and thermal post-buckling due to uniform temperature field or heat conduction are presented for a shear deformable functionally graded cylindrical shell with piezoelectric fiber reinforced composite (PFRC) actuators. The material...

... and successfully quantitatively replicates the overall deformation behavior including the initial linear elastic behavior, the onset of local buckling, and the post-buckling compliance. The proposed EOR model together with the finite element method offers a computationally efficient method for simulating large...

... caused buckling by yielding whereas the brittle adjacent composite ply lead to fracture. The maximum failure force of the material correlated well with the previously reported static flexural data, and the material outperformed the commonly used graphite/epoxy. 28 11 2005 13 07 2006...

... analysis. Finally, a three-story steel frame implementing either a traditional steel buckling-allowed bracing system or a SMA bracing system is analyzed analytically to determine if there is an advantage to using a SMA bracing system. The results show that the SMA braces improve the response of the braced...

... behavior than tubes with smaller aspect ratios (Buehler, M. J., Kong, Y., and Guo, H., 2004, ASME J. Eng. Mater. Technol. 126 , pp. 245–249). We distinguish three different classes of mechanical response to compressive loading. While the deformation mechanism is characterized by buckling of thin shells...

...Xiaohu Yao; Qiang Han The buckling of multiwalled carbon nanotubes under torsional load coupling with temperature change is researched. The effects of torsional load, temperature change, surrounding elastic medium, and van der Waals forces between the inner and outer nanotubes are taken...

...S. Leigh Phoenix; A. Kadir Yavuz; Katerina D. Papoulia; C. Yuen Hui In this study, we develop a model for buckling of a partially delaminated composite plate with transverse stitching to resist out of plane deformations. The model applies to carbon fiber/polyimide matrix composites rapidly heated...

...A. Pantano; M. C. Boyce; D. M. Parks A recently developed procedure for modeling the deformation of single and multi-wall carbon nanotubes [13,14] is applied to nanotube buckling and post-buckling under axial compression. Critical features of the model, which is grounded in elastic shell theory...

... different classes of mechanical response to compressive loading. While the deformation mechanism is characterized by buckling of thin shells in nanotubes with small aspect ratios, it is replaced by a rod-like buckling mode above a critical aspect ratio, analogous to the Euler theory in continuum mechanics...

.... The results from the nonlinear continuum theory compared well with the results from MD, except, for cases, where nanotube buckling was observed. When buckling occurs, the electromechanical behavior of the switch is simulated by employing a combined MD/continuum approach. The combined MD/continuum approach...

... product. Ends are manufactured in a series of forming operations, and the can end buckle pressure plays an important role in the design. It has been established that buckle pressure decreases with time in service. In this work, we outline a simple bending test to study relaxation at stress levels well...

...: the global bending of the undelaminated cantilever, and the local buckling of the delaminated part. A finite element model developed in ANSYS is used to concurrently analyze the effects of contact zone and delamination in the aforementioned asymmetrically loaded structure. The obtained experimental data...

... . Manuscript received by the Materials Division April 4, 2000; revised manuscript received December 18, 2001. Associate Editor: H. Zbib. 04 April 2000 18 December 2001 10 07 2003 steel recovery elasticity rolling buckling Young's modulus dislocation density indentation elastic...

... . Manuscript received by the Materials Division June 5, 2001; revised manuscript received December 18, 2001. Associate Editor: S. Mall. 05 June 2001 18 December 2001 30 09 2002 aluminium buckling indentation impact (mechanical) plastic deformation tearing instability compressive...

... AND TECHNOLOGY . Manuscript received by the Materials Division July 25, 2000. Guests Editors: Jian Cao and Z. Cedric Xia 25 July 2000 bending aerospace industry automobile industry structural engineering buckling compressibility elastoplasticity work hardening aluminium alloys austenitic...

..., and 40 J of impact energy. The LVI analysis is developed with regards to Z-pin buckling as a primary failure mode (and based on experimental observations). A finite element model accounting for buckling of the pins has been developed and analyzed using ABAQUS. This paper also presents experimental...

... not be connected, as shown here, but mixed with each other, see Section 2; the volume fraction α is always given by the compatibility condition, Eq. ( 1 ). ( c ) Microstructure of the low-density phase (before snap-through buckling). ( d ) Microstructure of the high-density phase (after snap-through buckling...