Bending and punching characteristics of aluminum sheets using the quasi-continuum method

• Man-Ping Chang,
• Shang-Jui Lin and
• Te-Hua Fang

Beilstein J. Nanotechnol. 2022, 13, 1303–1315, doi:10.3762/bjnano.13.108

• is more widely distributed than that of O2. When the punch displacement was d = 120 Å, all of the Al workpieces of the O1, O2, and O3 orientations were broken. Figure 6 shows the shear stress and strain distribution during the unloading process of the O1, O2, and O3 orientations. Because the cutting

• orientation O1, O2, and O3 during the punching process. The displacement of the punch is (a) 0 Å, (b) 25 Å, and (c) 50 Å. The shear stress and strain distribution during the unloading process of the O1, O2, and O3 orientations. The shear stress–displacement curves of workpieces with various thicknesses during

Effects of temperature and repeat layer spacing on mechanical properties of graphene/polycrystalline copper nanolaminated composites under shear loading

• Chia-Wei Huang,
• Man-Ping Chang and
• Te-Hua Fang

Beilstein J. Nanotechnol. 2021, 12, 863–877, doi:10.3762/bjnano.12.65

• shear stress and strain. In terms of the shear strength, the Hall–Petch relationship confirms that the strength of the composite specimens will increase with a decrease of the grain size [43][44]. Because of grain boundary strengthening, plastic deformation hardly occurs during the loading process [43

• affect the wrinkles of graphene. Although changing the grain size does not cause many effects on the shear stress and strain of the composites, it is still an important factor in changing the shear strength and the movement of defects of the composite specimens. Conclusion In this study, shear loading of

• shear stress and strain will decrease with an increase of temperature. After the composite structure is destroyed, the shear stress is reduced to about 0.5 GPa, which is close to the shear stress value of polycrystalline Cu. By contrast, for the armchair direction, the maximum shear stress and strain

Stick–slip boundary friction mode as a second-order phase transition with an inhomogeneous distribution of elastic stress in the contact area

• Iakov A. Lyashenko,
• Vadym N. Borysiuk and
• Valentin L. Popov

Beilstein J. Nanotechnol. 2017, 8, 1889–1896, doi:10.3762/bjnano.8.189

• of the friction block through an elastic spring, the frequency of the melting/solidification phase transitions increases with time. Keywords: boundary friction; dimensionality reduction; numerical simulation; shear stress and strain; stick–slip motion; tribology; Introduction The boundary friction