Deformation Of Thin-walled Tube Research Articles

Investigating the effect of slit patterns on the deformation of thin-walled tubes under side impact

Investigating the effect of slit patterns on the deformation of thin-walled tubes under side impact

Experimental study on the crashworthiness of bio-inspired aluminum foam-filled tubes under axial compression loading

As a lightweight and efficient energy-absorbing structure, thin-walled filled structure is widely used in various fields. This paper proposed four types of bio-inspired foam-filled thin-walled structures based on two typical straw structures (Cornstalk and Reed): bionic foam core with a central hole, 4 square holes, 4 taper holes and 2 nodes, respectively. The energy absorption capacity and deformation mode of bionic structures were studied by dynamic drop hammer and quasi-static compression. The results showed that 9 of 12 bionic samples had higher energy absorption capacity than the corresponding fully-filled samples. Different bionic features have different effects on the deformation of thin-walled tube, and the bionic features with the best overall performance are the 4 Square Holes and 4 Taper Holes design. It is noted that the bionic method can improve energy absorption capacity and affect the deformation mode of the thin-walled tubes under certain conditions.

Experimental study on energy absorption of bionic tubes inspired by bamboo structures under axial crushing

We report an experimental study on three new types of tubes inspired by the cross-section and nodes of bamboo with the aim of improving the crashworthiness of three types of cylindrical metal tubes: Bionic Tubes of Variable Thickness (BTVTs), Bionic Tubes with Rib (BTRs), and Bionic Tubes with Bamboo Cross-section (BTBCs), respectively. The EA capacity and deformation modes of the bionic tubes and a cylindrical tube were experimentally investigated in this study by drop-weight test. The drop test results revealed that 8 of the 14 bionic specimens exhibited greater SEA than the CT. And these results indicate that the bionic method can improve crashworthiness and affect the deformation mode under certain conditions. Different bionic feature have different effects on the deformation of thin-walled tube. Further research is required to optimize the bionic cross-section, rib, and thickness for the new types of tubes.

가연성 연소 가스의 데토네이션에 의한 얇은 관 변형 모델링

가연성 연소 가스의 데토네이션에 의한 얇은 관 변형 모델링

A State Variable Analysis of Inelastic Deformation of Thin Walled Tubes

This paper presents the results of inelastic analysis performed to calculate the deformation of a thin-walled tube subjected to a variety of loadings at elevated temperatures. A state variable constitutive model is used to describe material behavior. The material parameters for a particular material—Type 316 austenitic stainless steel—are determined from uniaxial load relaxation and tensile tests, and internally pressurized tube tests. The simulated results are compared with experimental data. The significance of the comparisons is discussed in terms of the validity of the state variable approach used here.