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1、裝與栩l：ScienceandTechnologyofFoodIndustry刀豆脫殼力學(xué)特性的實(shí)驗(yàn)研究李君，陸華忠。陳梓良’，胡澤涵’，吳良軍’(1．華南農(nóng)業(yè)大學(xué)工程學(xué)院，廣東廣州510642；2．華南農(nóng)業(yè)大學(xué)南方農(nóng)業(yè)機(jī)械與裝備關(guān)鍵技術(shù)，教育部重點(diǎn)實(shí)驗(yàn)室，廣東廣州510642)摘要：利用萬(wàn)能試驗(yàn)機(jī)對(duì)刀豆的力學(xué)特性進(jìn)行壓縮實(shí)驗(yàn)。選擇破殼力、破殼變形量和破殼能量為實(shí)驗(yàn)指標(biāo)，以刀豆寬度、厚寬比、含水率、加載位置和試驗(yàn)機(jī)的施壓速率為因素進(jìn)行了混合水平正交實(shí)驗(yàn)和回歸分析。結(jié)果表明，當(dāng)沿莢果縱脊面平行壓縮
2、時(shí)，破殼效果理想，為脫殼的有效加壓方向。含水率對(duì)破殼力和破殼能量的影響極顯著，呈非線性正相關(guān)關(guān)系，降低含水率有利于提高脫殼率和減少設(shè)備能耗。加載位置、寬度和厚寬比對(duì)破殼變形量有顯著影響，破殼變形量總體上隨寬度和厚寬比的增大而減小。刀豆破殼力和破殼能量的綜合最優(yōu)水平組合：加載位置為中部，含水率為14．6％，施壓速率為20mm／min。關(guān)鍵詞：刀豆，破殼力，破殼能量，破殼變形量ExperimentalstudyonmechanicalpropertiesofCanavaliaLIJun一，LUHua
3、—zhong'，，CHENZi—liang，HUZe—han，VULiang—jun(1．CollegeofEngineering，SouthChinaAgriculturalUniversity，Guangzhou510642，China；2．KeyLaboratoryofKeyTechnologyonAgriculturalMachineandEquipment，MinistryofEducation，SouthChinaAgriculturalUniversity，Guangzhou510
4、642，China)Abstract：ThemechanicalpropertiesofCanavaliawereinvestigatedbyauniversaltestingmachineundercompressionload．Thetestmechanicalpropertiesintermsoftheruptureforce，rupturedeformation，andruptureenergyrequiredforinitialrupturewereconsideredasthedep
5、endentvariables．Themixed—levelorthogonalexperimentsandregressionanalysiswerecarriedoutwithfiveindependentvariables，whichincludedpodwidth，moisturecontent，thickness—widthratio，compressionlocationandloadingrateoftestingmachine．Theresultsshowedthatwhenth
6、ecompressiondirectionwastransverselyinwidthdirectionandalonglongitudinalridgesurfaceofbeanpodcanobtaindesiredshellingefficiency．Moisturecontenthadasignificanteffectonruptureforceandruptureenergy．a(chǎn)ndthenegativenonlinearrelationshipsbetween廿1emwereobse
7、rved．Toimproveshellingefficiencyandreduceenergyconsumptionofshellingequipment，themoisturecontentshouldbereduced．Thecompressionlocation，podwidthandthickness—widthratiohadhighlysignificanteffectonrupturedeformation．Therupturedeformationgenerallydecreas
8、edbyincreasingpodwidthandthickness—widthratio．Thepreferredruptureparametersforruptureforceandruptureenergywereatcompressionlocationofmiddlepodpart，moisturecontentof14．6％andloadingrateof20mm／min．respectively．Keywords：Canavalia；ruptureforce；ruptureener
