Thin-walled structures like crash boxes may be used as energy absorption members in automotive chassis. There have been many studies addressing the behaviors of energy absorption members on frontal crash. These researches have attempted to predict the energy absorption and maximum impact load in shell structures. The energy absorption and maximum impact load depend on many parameters including ...

The purpose of the article is to improve strength calculation tube plate shell-and-tube heat exchanger, which regulated by interstate standard in force Ukraine. On basis tables, dot plots change coefficients were constructed and analyzed, take into account supporting effect pipes Ф1, Ф2, Ф3 depending on dimensionless parameter board-pipe system ω dependence stiffness coefficient perforated boar...

Alat penukar panas merupakan suatu peralatan yang digunakan untuk mempertukarkan energi dalam bentuk antara aliran fluida berbeda suhu dapat terjadi melalui kontak langsung maupun tidak langsung. Salah satu tipe dari alat kalor banyak dipakai adalah Shell and Tube Heat Exchanger. Namun perawatannya kita perlu adanya evaluasi lapangan sebelum dilakukan maintenace. Metode data selama 5(lima) hari...

Objective(s):  Medicinal benefits of quantum dots have been proved in recent years but there is little known about their toxicity especially in vivo toxicity. In order to use quantum dots in medical applications, studies ontheir in vivo toxicity is important.  Materials and Methods:CdSe:ZnS quantum dots were injected in 10, 20, and 40 mg/kg doses to male mice10 days later, mice were sacrificed ...

<span>Shell and tube heat exchanger is the most generally utilized types of for transfer in many industrial purposes. Shell comprises a set unit. One unit includes mechanical parts another consists controlling part. Both has to be modelled ensure efficient operation shell exchanger. The modelling completely established on type applications. controller independent kind only needs input flu...

This paper presents a system for design and simulation of supporting tube structure. We model each freeform tube component as a swept surface, and employ boundary control and skeletal control to manipulate its cross-sections and its embedding respectively. With the parametrization of the swept surface, a quadrilateral mesh consisting of nine-node general shell elements is automatically generate...

We compute energies and energy densities of static electromagnetic flux tubes in three and four spacetime dimensions. Our non-perturbative calculation uses scattering data from the potential induced by the flux tube. The calculation is exact to one-loop order and imposes standard perturbative renormalization conditions. We embed the flux tube in a configuration with zero total flux so that we c...

We compute energies and energy densities of static electromagnetic flux tubes in three and four spacetime dimensions. Our calculation uses scattering data from the potential induced by the flux tube and imposes standard perturbative renormalization conditions. The calculation is exact to one-loop order, with no additional approximation adopted. We embed the flux tube in a configuration with zer...

We examine electrical and coupled electromechanical properties of multiwall carbon nanotubes using transport measurements performed in-situ inside a high resolution transmission electron microscope (TEM). In one experiment, large electrical currents are passed through the nanotubes and the failure modes for nanotube "burnout" examined . In a second set of experiments, the electrical resistance ...

The eddy-current losses in a simplified model of the SIS100 dipole magnet (Fig. 1a) comprising the elliptical beam tube are calculated. The standard 3D Finite Element (FE) formulation is augmented by a shell element representation of the thin beam tube. Using this approach, the mesh construction can be restricted to the beam tube surface and the outer parts, avoiding the construction of element...