Load transfer mechanism of the composites incorporating nanohybrid shish-kebab structures

Numerical analysis of the elastic–plastic properties of the composites incorporating nanohybrid shish-kebab structures

“…7(b), the regions between two adjacent kebabs yield more obviously than the regions outside of the radial direction of kebabs. This special phenomenon can be explained by a ''load transfer back'' mechanism proposed in our recent work [16], which is defined as a phenomenon that the load is transferred from the matrix into the CNT in the regions without kebabs and partly transferred back to the matrix (crystalline polymer) in the regions with kebabs due to the existence of the stiffer crystal kebabs. Because of this special ''load transfer back'' mechanism, the crystal kebabs would take more load than the amorphous polymer and the bearing capacity of the amorphous polymer outside of the radial direction of kebabs would decrease in the same time.…”

“…Ref. [16] has calculated that the load transferring effect of the crystal kebab becomes weak when the relative interval of the kebabs decreases in a certain range. As a result, the effectiveness of the CNT and the kebab acting together is the best when the relative interval p is equal to 2 on the condition of c smaller than 40.…”

“…Furthermore, because of the complex structure, theoretical analysis can hardly give enough predictive results for the NHSK reinforced composites, either. For instance, Chen and Lu [16] analyzed the load transfer mechanism of composites incorporating the NHSK structures by an improved shear-lag model, but could not give the effective properties of the whole composites. However, computational approaches, especially FEA method, can provide more reasonable descriptions of the complex microstructures of the composites and give relative accurate predictions for their properties.…”

“…By controlling the crystallization conditions, Li et al [7,8] firstly decorated the CNTs periodically with polymer single crystals and obtained a novel nano-structure, which is named as ''nanohybrid shish-kebabs (NHSKs) structure''. Henceforth, plenty of researches have been carried on related issues, such as preparation methods [9][10][11][12][13] and mechanical properties [14][15][16].…”