RESEARCH PAPER
Stress-strain response of sheared wheat granular stored in silos using triaxial compression tests
| 1 | College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, 450001, China |
| 2 | College of Water Conservancy Engineering, Zhengzhou University, Zhengzhou, 450001, China |
| 3 | Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety Protection, Henan Province, Zhengzhou University, Zhengzhou, 450001, China |
CORRESPONDING AUTHOR
Yuke Wang
College of Water Conservancy Engineering; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety Protection, Zhengzhou University, China
College of Water Conservancy Engineering; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety Protection, Zhengzhou University, China
Publication date: 2020-01-15
Final revision date: 2019-11-14
Acceptance date: 2020-01-03
Int. Agrophys. 2020, 34(1): 103–114
KEYWORDS
TOPICS
ABSTRACT
Wheat granular material stored in silos usually suffers shearing loads, which induces complex stress-strain response during the silo filling and discharging process. In order to guarantee the safe storage of these granular materials, it is necessary to investigate the shearing behaviour of wheat granular material in silos. In this paper, a series of triaxial tests were conducted on wheat granular material by using a modified double cell triaxial system. The stress-strain responses including the volumetric strain behaviour were examined considering the effect of the initial void ratio, confining pressure and shearing velocity. Different shearing states were discussed to obtain their strength parameters in various conditions. The results show that the shearing characteristics of wheat granular material are influenced by the shearing velocity. The friction angles increase with the decreasing void ratio at different states. The final volumetric strain decreases with increasing confining pressure, and the dilation is diminished. The dilatancy behaviour was quantitatively evaluated based on Row’s theory for wheat granular material. The stress-strain relationship of wheat granular material was then determined.
REFERENCES (45)
1.
ACI 313-97, 1997. Standard practice for design and construction of concrete silos and stacking tubes for storing granular materials, American Concrete Institute, Farmington Hills, MI. https://doi.org/10.14359/3390.
2.
ASAE S352.2 APR1988 (R2017), 2017. Moisture Measurement-Unground Grain and Seeds.
3.
Ayuga F., Aguado P., Gallego E., and Ramirez A., 2005. New steps towards the knowledge of silos behaviour. Int. Agrophysics, 19(1), 7-17.
4.
Ayuga F., Guaita M., and Aguado P., 2001. SE-structures and environment: static and dynamic silo loads using finite element models. J. Agric. Eng. Res., 78(3), 299-308. https://doi.org/10.1006/jaer.2....
5.
Bishop A.W. and Donald I.B., 1961. The experimental study of partly saturated soil in the triaxial apparatus. Proc. 5th Int. Conf. Soil Mechanics and Foundation Engineering, Vol. 1, 13-21, July, Paris, France.
6.
Bolton M.D., 1986. Strength and dilatancy of sands. Géotechnique, 36(1), 65-78.
7.
Britton M.G. and Moysey E.B., 1986. Grain properties in the proposed new engineering practice on bin loads. ASAE Paper No. 864502. St. Joseph, MI, USA.
8.
BS EN1991-4-2006. Eurocode 1-Actions on structures-Part 4: Silos and Tanks, European Committee for Standardization, Brussels.
9.
Carson J.W., 2001. Silo failures: Case histories and lessons learned. Handbook of Powder Technology, 10, 153-166. https://doi.org/10.1016/s0167-....
10.
Carson J. and Craig D., 2015. Silo design codes: Their limits and inconsistencies, 7th World Congr. Technol. (WCPT7). Procedia Eng., 102, 647-656. https://doi.org/10.1016/j.proe....
11.
Chakraborty T. and Salgado R., 2010. Dilatancy and shear strength of sand at low confining pressures. J. Geotechnical Geoenvironmental Eng., 136(3), 527-532. https://doi.org/10.1061/(asce)....
12.
Chen X. and Zhang J., 2016. Influence of relative density on dilatancy of clayey sand-fouled aggregates in large-scale triaxial tests. J. Geotechnical Geoenvironmental Eng., 142(10), 06016011. https://doi.org/10.1061/(asce)....
13.
Dogangun A., Karaca Z., Durmus A., and Sezen H., 2009. Cause of damage and failures in silo structures. J. Performance Constructed Facilities, 23(2), 65-71. https://doi.org/10.1061/(asce)....
14.
Goodey R.J., Brown C.J., and Rotter J.M., 2017. Rectangular steel silos: Finite element predictions of filling wall pressures. Eng. Struct., 132, 61-69. https://doi.org/10.1016/j.engs....
15.
GB 50077-2017. Standard for design of reinforced concrete silos. (in Chinese).
16.
Guaita M., Couto A., and Ayuga F., 2003. Numerical simulation of wall pressure during discharge of granular material from cylindrical silos with eccentric hoppers. Biosystems engineering, 85(1), 101-109. https://doi.org/10.1016/s1537-....
17.
Hardin B.O., Hardin K.O., Ross I.J., and Schwab C.V., 1990. Triaxial compression, simple shear, and strength of wheat en masse. Trans. ASAE, 33(3): 933-943. https://doi.org/10.13031/2013.....
18.
Horabik J. and Molenda M., 2017. Distribution of static pressure of seed in a shallow model silo. Int. Agrophys., 31, 167-174. https://doi.org/10.1515/intag-....
19.
Kobyłka R., Horabik J., and Molenda M., 2017. Numerical simulation of the dynamic response due to discharge initiation of the grain silo. Int. J. Solids Structures, 106-107, 27-37. https://doi.org/10.1016/j.ijso....
20.
Liu S.D., Zhou Z.Y., Zou R.P., Pinson D., Yu A.B., 2014. Flow characteristics and discharge rate of ellipsoidal particles in a flat bottom hopper. Powder Technol., 253, 70-79. https://doi.org/10.1016/j.powt....
21.
Moya M., Aguado P. J., and Ayuga F., 2013. Mechanical properties of some granular agricultural materials used in silo design. Int. Agrophys., 27(2), 181-193. https://doi.org/10.2478/v10247....
22.
Moya M., Ayuga F., Guaita M., and Aguado P., 2002. Mechanical properties of granular agricultural materials. Transactions of the ASAE, 45(5), 1569. https://doi.org/10.13031/2013.....
23.
Moya M., Guaita M., Aguado P., and Ayuga F., 2006. Mechanical properties of granular agricultural materials, part 2. Transactions of the ASABE, 49(2), 479-489. https://doi.org/10.13031/2013.....
24.
Nielsen J., 1977. Model laws for granular media and powders with a special view to silo models. Archives of Mechanics, 29(4), 547-560.
25.
Puri V.M., 2002. Characterizing powder flowability. Chemical Processing, 65-39.
26.
Ramírez A., Moya M., and Ayuga F., 2009. Determination of the mechanical properties of powdered agricultural products and sugar. Particle and Particle Systems Characterization, 26(4), 220-230. https://doi.org/10.1002/ppsc.2....
27.
Ramírez A., Nielsen J., and Ayuga F., 2010. Pressure measurements in steel silos with eccentric hoppers. Powder Technol., 201(1), 7-20. https://doi.org/10.1016/j.powt....
28.
Rotter J.M., 2009. Silos and tanks in research and practice: state of the art and current challenges, Proc. Int. Association for Shell and Spatial Structures (IASS) Symp., Valencia Evolution and Trends in Design, Analysis and Construction of Shell and Spatial Structures. Universidad Politecnica de Valencia, Spain, 65-76. https://doi.org/10.1260/026635....
29.
Rotter J.M., Holst J.M.F.G., Ooi J.Y., and Sanad A.M., 1998. Silo pressure predictions using discrete-element and finite-element analyses. Philosophical Transactions of the Royal Society of London. Series A: Mathematical. Physical and Eng. Sci., 356(1747), 2685-2712. https://doi.org/10.1098/rsta.1....
30.
Rowe P.W., 1962. The stress-dilatancy relation for static equilibrium of an assembly of particles in contact. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 269(1339), 500-527. https://doi.org/10.1098/rspa.1....
31.
Ruiz A., Couto A., and Aguado P.J., 2012. Design and instrumentation of a mid-size test station for measuring static and dynamic pressures in silos under different conditions–Part II: Construction and validation. Computers and electronics in agriculture, 85, 174-187. https://doi.org/10.1016/j.comp....
32.
Stasiak M., Tomas J., Molenda M., Rusinek R., and Mueller P., 2010. Uniaxial compaction behaviour and elasticity of cohesive powders. Powder Technol., 203(3), 482-488. https://doi.org/10.1016/j.powt....
33.
Thompson S.A. and Ross I.J., 1983. Compressibility and frictional coefficients of wheat. Transactions of the ASAE, 26 (4), 1171-1176. https://doi.org/10.13031/2013.....
34.
Tripodi M.A., Puri V.M., Manbeck H.B., and Messing G.L., 1994. Triaxial testing of dry, cohensive powder and its application to a modified Cam-clay constitutive model. Powder Technol., 80 (1), 35-43. https://doi.org/10.1016/0032-5....
35.
Turner A.P., Montross M.D., McNeill S.G., Sama M.P., Casada M.E., Boac J.M., Bhadra R., Maghirang R.G., and Thompson S.A., 2016. Modeling the compressibility behavior of hard red wheat varieties. Transactions of the ASABE, 59 (3), 1029-1038. https://doi.org/10.13031/trans....
36.
Wang Y., Gao Y., Guo L., and Yang Z., 2018. Influence of intermediate principal stress and principal stress direction on drained behavior of natural soft clay. Int. J. Geomechanics, 18(1), 04017128. https://doi.org/10.1061/(asce)....
37.
Wang Y., Gao Y., Li B., Guo L., Cai Y., Mahfouz A.H., 2019. Influence of initial state and intermediate principal stress on undrained behavior of soft clay during pure principal stress rotation. Acta Geotechnica, 14(5), 1379-1401. https://doi.org/10.1007/s11440....
38.
Wheeler S.J., 1988. The undrained shear strength of soils containing large gas bubbles. Géotechnique, 38(3), 399-413. https://doi.org/10.1680/geot.1....
39.
Yin J.H., 2003. A double cell triaxial system for continuous measurement of volume changes of an unsaturated or saturated soil specimen in triaxial testing. Geotechnical Testing J., 26(3), 353-358. https://doi.org/10.1520/gtj113....
40.
Zeng C. and Wang Y., 2019a. Compressive behaviour of wheat from confined uniaxial compression tests. Int. Agrophys., 33(3): 347-354. https://doi.org/10.31545/intag....
41.
Zeng C. and Wang Y., 2019b. The shear strength and dilatancy behaviour of wheat stored in silos. Complexity, Article ID 1547616. 9 pages. https://doi.org/10.1155/2019/1....
42.
Zhang Q., Puri V.M., and Manbeck H.B., 1986. Determination of elastoplastic constitutive parameters for wheat en masse. Transactions of the ASABE, 29(6), 1739-1746. https://doi.org/10.13031/2013.....
43.
Zhang Q. and Britton M.G., 2003. A micromechanics model for predicting dynamic loads during discharge in bulk solids storage structures. Canadian Biosystems Eng., 45, 5.
44.
Zhang S., Lin P., Wang C.L., Tian Y., Wan J.F., and Yang L., 2014. Investigating the influence of wall frictions on hopper flows. Granular Matter, 16(6), 857-866. https://doi.org/10.1007/s10035....
45.
Zhao Y., Cao Q.S., and Su L., 2013. Buckling design of large circular steel silos subject to wind pressure. Thin-Walled Structures, 73, 337-349. https://doi.org/10.1016/j.tws.....
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