Helium (He), the second element in the periodic table, is the most abundant element in the universe apart from hydrogen. It is widely accepted that He exists in the interiors of gas giant planets which holds the high-pressure conditions. Helium is extremely difficult to react with other elements to ...

It has great importance for the blast-resistant design of the structures to study the dynamic response and damage failure of structural components under explosion loads. This work focused on analyzing the influences of the shock tube’s parameters on the loads at the end of the driven section. Based ...

To analyze the strain rate effect and its influence on the dynamic response of ultra-high molecular weight polyethylene (UHMWPE) subjected to hypervelocity impact, the stress-strain relation of UHMWPE at different strain rates loading were obtained through universal material testing machine and Hopk...

To systematically study the mechanical properties of glass fiber reinforced plastics, the stress-strain curves and corresponding mechanical parameters of glass fiber reinforced plastic with strain rates of 0.001–0.1 s⁻¹ and 1128–1840 s⁻¹ were obtained by material testing system (MTS) and split Hopki...

To explore the relationship between energy release and failure mode of pegmatite gabbro under confining pressure, the dynamic mechanical properties under different confining pressures and different impact velocities were studied using split Hopkinson pressure bar and LS-DYNA simulation software, and...

Aviation aircraft inevitably encounter threat of hail impact during flight, which seriously endangers flight safety of aircraft. At present, impact characteristics of natural ice materials are still unclear, this paper studies mechanical properties of natural ice materials under different strain rat...

To study the effect of water content on mechanical properties and energy damage of hard rock materials, the uniaxial compression tests were carried out on sandstone samples under different water contents. The test results show that with the increase of water content, the peak stress, brittleness ind...

To achieve the tunable plateau stress and energy absorption in porous grid structures, a design method for star-shaped structures with double stress plateaus was proposed. Three kinds of star-shaped structures with double stress plateaus were designed and fabricated. The mechanical behavior and ener...

A new type of circular chiral multicellular tube with different geometric structures was proposed, and its crashworthiness was analyzed under the condition of the same wall thickness and mass. The results show that the circular chiral multicellular tube has better crashworthiness than the traditiona...

Additive manufacturing technology has promoted the development of composite materials and broadened the design space of composite structures. However, the dynamic mechanical properties of composite materials based on additive manufacturing still face problems such as lack of research methods and com...

Numerical simulations of polyurea/aluminum structures under blast loading were carried out to study the blast resistant performance of polyurea/aluminum composite (PAC) structures. The accuracy of the numerical models was verified by the test results in related literature. Under the condition of equ...

In order to improve the in-plane mechanical properties of honeycomb structure, a hexagonal hierarchical structure is established based on the conventional hexagonal honeycomb structure. The presented hierarchical one is used to replace part of the cell layer of the conventional hexagonal honeycomb, ...

Based on the hybrid cross-section design, 10 kinds of cross-section design of star-shaped hybrid multi-cell tube (SHMT) were proposed. The crashworthiness of SHMT under multiple impact angles was studied by numerical simulation. It is found that the connection mode of hybrid cross-section and the nu...

In order to reduce the waste of residual top and bottom pillars resources in the recovery process of Chaihulanzi gold mine, a numerical model of extrusion blasting was established based on LS-DYNA finite element software. According to the three minimum burden of 0.7, 0.8 and 1.0 m, and the three hol...

The net side bushing is an important part of the transformer. During operation, the cooling oil inside the bushing will explode due to insulation breakdown, which will cause great potential safety hazard to the transformer. Therefore, it is of great significance to carry out quantitative evaluation ...

In order to study the evolution mechanism of shale permeability under thermal-fluid-solid coupling, the effective stress-permeability model of shale is developed considering the impact of thermal desorption and effective stress and thermal expansion on shale permeability. The proposed model is capab...