Numerical studies on issues of -independence for indoor airflow and pollutant dispersion within an isolated building.

This study conducted the numerical models validated by wind-tunnel experiments to investigate the issues of -independence of indoor airflow and pollutant dispersion within an isolated building. The window Reynolds number ( ) was specified to characterize the indoor flow and dispersion. The indicators of (ratio of relative change) or () (difference ratio of dimensionless concentration) ≤ 5% were applied to quantitatively determine the critical for indoor flow and turbulent diffusion.

Harnessing uniaxial tension to tune Poisson's ratio and wave propagation in soft porous phononic crystals: an experimental study.

Exerting mechanical loads on soft periodic porous phononic crystals provides a unique opportunity to control the propagation of waves through the peculiar band gaps. However, it is quite difficult to experimentally confirm the band gaps in soft materials owing to their viscosity and instability-prone character. We investigate here via experiments the effect of regulation of uniaxial tension on the band gaps in a 2D soft phononic crystal with criss-crossed elliptical holes which was designed based on the contrarian thinking to our previous study.

Time-dependent response of laminated isotropic strips with viscoelastic interfaces.

The two dimensional problem of simply supported laminated isotropic strips with viscoelastic interfaces and under static loading was studied. Exact solution was derived based on the exact elasticity equation and the Kevin-Voigt viscoelastic interfacial model. Numerical computations were performed for a strip consisting of three layers of equal thickness.

Potential theory method for 3D crack and contact problems of multi-field coupled media: a survey.

This paper presents an overview of the recent progress of potential theory method in the analysis of mixed boundary value problems mainly stemming from three-dimensional crack or contact problems of multi-field coupled media. This method was used to derive a series of exact three dimensional solutions which should be of great theoretical significance because most of them usually cannot be derived by other methods such as the transform method and the trial-and-error method. Further, many solutions are obtained in terms of elementary functions that enable us to treat more complicated problems easily.

Theoretical solution of a spherically isotropic hollow sphere for dynamic thermoelastic problems.

The separation of variables method was successfully used to resolve the spherically symmetric dynamic thermoelastic problem for a spherically isotropic elastic hollow sphere. Use of the integral transform can be avoided by means of this method, which is also appropriate for an arbitrary thickness hollow sphere subjected to arbitrary thermal and mechanical loads. Numerical results are presented to show the dynamic stress responses in the uniformly heated hollow spheres.

Three-dimensional analysis of a thick FGM rectangular plate in thermal environment.

The thermal behavior of a thick transversely isotropic FGM rectangular plate was investigated within the scope of three-dimensional elasticity. Noticing many FGMs may have temperature-dependent properties, the material constants were further considered as functions of temperature. A solution method based on state-space formulations with a laminate approximate model was proposed.