Prediction of sound transmission through elastomeric bulb seals

2014-01-01
Doors are the weakest parts of the buildings in terms of sound transmission. Examination of sound transmission loss characteristics of doors reveals two separate transmission paths to be considered. First one is transmission through door leaf and the second one is leak transmission through elastomeric bulb seals. Seals are the important parts of the sound transmission loss characteristic of door structure. Hence, their insulation capability should be analyzed and optimized to improve sound transmission loss of an acoustical door. The aim of this research is to predict sound transmission loss of elastomeric bulb seals. This assessment includes two main steps. A static analysis is required to determine the seal shape under compression. Seals are made of elastomers which display nonlinear mechanical behavior. This requires hyperelastic material modeling and nonlinear finite element analysis (FEA). An acoustic analysis calculating the sound transmission is then carried on deformed geometry acquired from the first phase of the research. A sample seal geometry, which is already being used in industry, is considered as the case study. Influences of different hyper elastic material models on sound insulation are also studied.
43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 (16 - 19 Kasım 2014)

Suggestions

Prediction of sound transmisson through elastomeric bulb seals
Atamer, Serkan; Çalışkan, Mehmet; Özgen, Gökhan Osman; Department of Mechanical Engineering (2014)
September 2014, 111 pages Doors are the weakest parts of the buildings in terms of sound transmission. Examination of sound transmission loss characteristics of doors reveals two separate transmission paths to be considered, namely, transmission through door leaf and leak transmission through bulb seals. Seals are the important parts of the sound transmission loss characteristic of door structure owing to their weakness compared to door leaf. Hence, their insulation capability should be analyzed and optimiz...
Prediction of sound transmission characteristics of multiple elastomeric bulb seals
Barutçu, Burak Nebil; Çalışkan, Mehmet; Department of Mechanical Engineering (2017)
Prevention of transmitted sound through car doors is a critical issue; as doors are the weakest parts of a car assembly in terms of sound isolation performance. Main path for sound transmission is through the seals between the car body and the door. Hence, the examination of sound transmission loss characteristics of seals between the car body and door is important to improve the sound isolation characteristics of the door assembly. The aim of this research is prediction of the sound transmission characteri...
Proposal of a New Tool for 3D Pattern Generation
Sorguç, Arzu (2015-07-01)
The behavior of sound in an enclosed space is very complex. This behavior is closely related to boundaries, material properties and with the form of the space they are in. In this paper, the image source method as a method for modeling the sound field in enclosed spaces is re-visited and patterns of image sources and their relationships with the geometry of enclosing space is studied by using polygons/polyhedrons in 2D and 3D. Symmetries of these image source points, identification of possible polygons enab...
Evaluation of floor vibration in an existing building
Semerdöken, Yavuz; Yakut, Ahmet; Department of Civil Engineering (2019)
Vibration serviceability is a major concern in the design of lighter floor systems of newer buildings. Floor vibrations due to walking and rhythmic movements of the occupants should not exceed threshold levels for the comfort of occupants and the protection of sensitive equipment in the buildings. The objective of this study is to evaluate the floor vibration problem reported in a six-story reinforced concrete with two basement floors office building. First, structural system dynamic properties of the build...
Prediction of noise transmission in a submerged structure by statistical energy analysis
Cavcar Yayladere, Bahar; Çalışkan, Mehmet; Department of Mechanical Engineering (2012)
The aim of this study is to develop a sound transmission model that can be used to predict the vibration and noise levels of a submerged vessel. The noise transmitted from the mechanical vibrations of the hull of a submarine and the turbulent boundary layer excitation on the submarine are investigated. A simplified physical model of the submarine hull including the effects of bulkheads, end enclosures, ring stiffeners and fluid loading due to the interaction of the surrounding medium is presented in the stu...
Citation Formats
S. Atamer, M. Çalışkan, and G. O. Özgen, “Prediction of sound transmission through elastomeric bulb seals,” presented at the 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 (16 - 19 Kasım 2014), Melbourne, Avustralya, 2014, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72794.