scholarly journals A study on the probabilistic response of typical sound insulation systems inside and outside room with arbitrary random excitation.

1986 ◽  
Vol 7 (5) ◽  
pp. 291-295
Author(s):  
Mitsuo Ohta ◽  
Yasuo Mitani
Keyword(s):  
Random Excitation ◽  
Sound Insulation ◽  
Insulation Systems ◽  
Probabilistic Response

SYSTEM MODELING BY A NEO-FUZZY-NEURON WITH APPLICATIONS TO ACOUSTIC AND CHAOTIC SYSTEMS

1995 ◽  
Vol 04 (01n02) ◽  
pp. 73-91 ◽  
Author(s):  
EIJI UCHINO ◽  
TAKESHI YAMAKAWA
Keyword(s):  
System Modeling ◽  
Chaotic Signal ◽  
Sound Insulation ◽  
Target System ◽  
Generalization Capability ◽  
New Approach ◽  
Future Behavior ◽  
Insulation Systems ◽  
Nonlinear Chaotic System ◽  
Actual Effectiveness

This paper describes a new approach to system modeling by using a neo-fuzzy-neuron. The target system is modeled adaptively by simply feeding its input and output data to the neo-fuzzy-neuron, whose basic principle was proposed by the authors in 1992. Firstly, the neo-fuzzy-neuron is applied to the restoration of a saturated and/or intermittent speech or chaotic signal to show its actual effectiveness. It is then enhanced in order to get a better generalization capability. The enhanced version of the neo-fuzzy-neuron could facilitate to identify clearly the nonlinear chaotic system, and could most likely predict the future behavior of the system. The neo-fuzzy-neuron was further applied to the identification of actual sound insulation systems. The application was a success and provided promising results.

Development of Out-Wall External Thermal Insulation System Based on Rock-Wool

2012 ◽  
Vol 174-177 ◽  
pp. 1589-1592
Author(s):  
Ming Gang Xu ◽  
Xu Wang ◽  
Zhuo Wei Ding
Keyword(s):  
Thermal Insulation ◽  
Thermal Conductivity Coefficient ◽  
Outer Wall ◽  
Sound Insulation ◽  
Insulation System ◽  
Stable Chemical ◽  
Insulation Systems ◽  
Saving Measure ◽  
Insulation Performance ◽  
Rock Wool

The outer-wall thermal insulation system has been wide used in civil engineering as an effective energy-saving measure. At present, the organic flammable thermal insulation materials such as EPS and XPS are used in outer-wall thermal insulation system in China, which leads to great fire damage probably. The rock-wool is described in detail on its merits such as good thermal insulation performance, good sound insulation performance, light weight, low thermal conductivity coefficient, incombustibility, innocuity and stable chemical capability. Two popular outer-wall external thermal insulation systems are introduced. The construction sequence of the outer-wall external thermal insulation system with rock-wool slabs, mortar and thin layer plastering technology is described.

scholarly journals Vibrometry Assessment of the External Thermal Composite Insulation Systems Influence on the Façade Airborne Sound Insulation †

2018 ◽  
Vol 8 (5) ◽  
pp. 703 ◽  
Author(s):  
Daniel Urbán ◽  
N.B. Roozen ◽  
Herbert Muellner ◽  
Peter Zaťko ◽  
Alexander Niemczanowski ◽  
...  
Keyword(s):  
Sound Insulation ◽  
Airborne Sound ◽  
Insulation Systems

Hybrid Optimization and Anti-Optimization of a Stochastically Excited Beam

2013 ◽  
Vol 81 (2) ◽  
Author(s):  
Isaac Elishakoff ◽  
Kévin Dujat ◽  
Maurice Lemaire ◽  
Guy Gadiot
Keyword(s):  
Cross Section ◽  
Mean Square Displacement ◽  
Random Excitation ◽  
Hybrid Optimization ◽  
Maximum Response ◽  
Mean Square ◽  
Euler Beam ◽  
Middle Cross Section ◽  
The Mean ◽  
Probabilistic Response

Random vibrations of the damped Bernoulli–Euler beam with two supports and subjected to a stationary random excitation are studied. The supports are symmetrically placed with respect to the middle cross-section of the beam. We investigate the mean square displacement of the beam with the goal of determining the optimum location of supports in order to minimize the maximum probabilistic response. This study falls in the category of hybrid optimization and anti-optimization, since we are looking for the worst maximum response, constituting the anti-optimization process; subsequently, we are looking for optimization of the structure to make the maximum response minimal by properly the spacing supports.

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