Asymmetry of model bin wall loads and lateral pressure induced from two- and three-dimensional obstructions attached to the wall

dc.contributor.author	Molenda, M	en
dc.contributor.author	Montross, MD	en
dc.contributor.author	Thompson, SA	en
dc.contributor.author	Horabik, J	en
dc.date.accessioned	2014-06-06T06:48:55Z
dc.date.available	2014-06-06T06:48:55Z
dc.date.issued	2009	en
dc.identifier.issn	21510032	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4332
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-60749094778&partnerID=40&md5=293428b54e8d05b87b4d19e2179611d6	en
dc.subject	Granular flow	en
dc.subject	Horizontal pressure	en
dc.subject	Insert	en
dc.subject	Janssen's equation	en
dc.subject	Moments	en
dc.subject	Silo	en
dc.subject.other	Granular flow	en
dc.subject.other	Horizontal pressure	en
dc.subject.other	Insert	en
dc.subject.other	Janssen's equation	en
dc.subject.other	Moments	en
dc.subject.other	Silo	en
dc.subject.other	Confined flow	en
dc.subject.other	Farm buildings	en
dc.subject.other	Floors	en
dc.subject.other	Granular materials	en
dc.subject.other	Pressure effects	en
dc.subject.other	Steel structures	en
dc.subject.other	Three dimensional	en
dc.subject.other	Two dimensional	en
dc.subject.other	Bins	en
dc.subject.other	asymmetry	en
dc.subject.other	eccentricity	en
dc.subject.other	pressure effect	en
dc.subject.other	silo	en
dc.subject.other	steel	en
dc.subject.other	wall	en
dc.subject.other	Triticum aestivum	en
dc.title	Asymmetry of model bin wall loads and lateral pressure induced from two- and three-dimensional obstructions attached to the wall	en
heal.type	journalArticle	en
heal.publicationDate	2009	en
heal.abstract	An obstruction attached to the wall of a bin produced by cohesive, moldy grain has been reported as a source of failure in steel bins. A study was conducted to estimate the effect of two-dimensional (plane) and three-dimensional (block) obstructions attached to the corrugated wall in a flat-floor model bin where the lateral wall pressure and vertical wall loads were measured. The model bin was 1.83 m in diameter, 5.75 m high, and filled with soft red winter wheat to a depth of 5.0 m (height-to-diameter ratio h/d of 2.75). The plane obstruction had the form of an annulus segment spanning 60° of the bin wall and a width of 0.154 m (surface area of 7.2% of the bin floor area). A three-dimensional obstruction was shaped as a block with two bases identical to the plane obstruction and a height of 0.5 m. The plane obstruction and the upper base of the block obstruction were attached to the wall at h/d ratios of 1.26, 0.81, and 0.38. Even in conditions of near symmetry during centric loading, wall overturning moments of approximately 1 kNm were observed. The highest wall moment measured was 2.7 kNm at the end of filling with the block attached at h/d of 0.38; the moment with a plane obstruction in the same position was 2.1 kNm. Without an obstruction attached to the wall, the maximum lateral pressure increased 2.5 times relative to the static pressuer compared to an increase of 4 times with an obstruction. The data collected indicated that there are considerable additional loads imposed on a bin due to obstructions that may form during storage that are not considered in the design codes and could approach levels observed during eccentric discharge. © 2009 American Society of Agricultural and Biological Engineers.	en
heal.journalName	Transactions of the ASABE	en
dc.identifier.issue	1	en
dc.identifier.volume	52	en
dc.identifier.spage	225	en
dc.identifier.epage	233	en