Acoustic performance optimization of a cementitious composite with a porous medium

2021 ◽  
Vol 44 ◽  
pp. 103362
Author(s):  
Sen Lin ◽  
Genbao Zhang ◽  
Junbo Sun ◽  
Shilin He ◽  
Changfu Chen ◽  
...  
Keyword(s):  
Porous Medium ◽  
Performance Optimization ◽  
Cementitious Composite ◽  
Acoustic Performance

NVH Analysis of Acoustic Materials by Using Aluminum and Steel metals

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Vijaykumar . ◽  
Vinay V. Kuppast ◽  
Vinay N Chalwa ◽  
Vinay N Chalwa
Keyword(s):  
Performance Optimization ◽  
Quality Evaluation ◽  
Noise Control ◽  
Active Noise Control ◽  
Sound Quality ◽  
Acoustic Performance ◽  
Frequency Sound ◽  
Cabin Noise ◽  
Active Noise ◽  
Made In

Sound quality evaluation has turned into a standard idea in the structure in the field of vehicle acoustic performance optimization in an endeavor to determine the issue active noise control (ANC) techniques were created where auxiliary sources were proposed to lessen the noise inside the cabin. Therefore an endeavor has been made in this paper to audit the advancements so far did in the field of optimization thinks about on decrease of noise in the truck cabins by using acoustic materials. In light of this, it is to investigate the possibility of acoustic materials as aluminum and steel metals an option with plan to improve the cabin noise by NVH analysis can be carried out by using Ansys and Hypermesh software’s. By finding the analysis values of frequency, sound and weighted sound can be concluded the acoustic materials are good for quieter applications.

Modelling Of Transport And Capture Of Particles In A Porous Medium

2019 ◽  
pp. 56-60
Keyword(s):  
Porous Medium ◽  
Asymptotic Solution ◽  
Retention Mechanism ◽  
Inverse Filtering ◽  
Underground Structures ◽  
Loose Soil ◽  
Monodisperse Suspension ◽  
Homogeneous Porous Medium ◽  
Model Equations ◽  
Pass Through

The study of the transport and capture of particles moving in a fluid flow in a porous medium is an important problem of underground hydromechanics, which occurs when strengthening loose soil and creating watertight partitions for building tunnels and underground structures. A one-dimensional mathematical model of long-term deep filtration of a monodisperse suspension in a homogeneous porous medium with a dimensional particle retention mechanism is considered. It is assumed that the particles freely pass through large pores and get stuck at the inlet of small pores whose diameter is smaller than the particle size. The model takes into account the change in the permeability of the porous medium and the permissible flow through the pores with increasing concentration of retained particles. A new spatial variable obtained by a special coordinate transformation in model equations is small at any time at each point of the porous medium. A global asymptotic solution of the model equations is constructed by the method of series expansion in a small parameter. The asymptotics found is everywhere close to a numerical solution. Global asymptotic solution can be used to solve the inverse filtering problem and when planning laboratory experiments.

Sign in / Sign up

Export Citation Format

Share Document