The design of everyday things
The design of everyday things
... Design of Everyday Things • It examines the effect of poor design and equipment failure on human behavior • It covers user-centered design, on everyday things and on everyday actions Design of ... Homework The purpose of this assignment is to give you a bit of practice with the material presented in the first week of the class - the design of everyday things * find a vending ... Example: Thermostat • Will a room or oven heat (or cool) faster if the thermostat is turned all the way to the maximum setting? Thermostat • Two 'folk' theories of thermostats • timer theory - thermostat...
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The design of mat foundations
... Find the soil pressures at the mat invert Find the centroid of the column loads (location of the resultant R) with respect to a new x’y’ coordinate system located at the lower left corner at mat, ... acting as stiffness for the mat grillages Details of a mat foundation, serving as the slab of a one-story basement Compensated mat foundations If zero settlement is desired, the excavated soil weight ... moment diagrams Determine the reinforcement requirements The maximum positive moment (bottom bars) of the mat = 2281 kip-ft The maximum negative moment (top bars) of the mat = 2448 kip-ft C = 0.85...
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Tài liệu The Design of Rolling Bearing Mountings P2 ppt
... accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the rotary table Therefore, the rigidity of the thrust bearings is especially important To increase the ... common: rolling bearings For this reason the brief texts concentrate on the rolling bearing aspects of the applications The operation of the machine allows conclusions to be drawn about the operating ... lubrication (FAG rolling bearing grease Arcanol L71V) Shaft seals prevent the ingress of dirt 22: Flywheel bearing arrangement of a car body press The Design of Rolling Bearing Mountings PDF 3/8:...
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Tài liệu The Design of Rolling Bearing Mountings P1 pptx
... common: rolling bearings For this reason the brief texts concentrate on the rolling bearing aspects of the applications The operation of the machine allows conclusions to be drawn about the operating ... is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the upper thrust bearing The radial ... preloading the bearings in the axial direction The bearing seats on the shaft and in the end cap bores must be well aligned To allow the spring washer to adjust the bearings axially, the outer...
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Tài liệu The Design Of Manufacturing Systems P2 docx
... with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) is the ranking of the generated redesign ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to find out if the design can be ... both the syntactic-level and semanticlevel sharing of information One of the major bottlenecks in building integrated design- manufacturing systems is the incomprehension of the language of Computer-Aided...
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Tài liệu The Design Of Manufacturing Systems P1 pptx
... know the prices of chemicals in the various markets and the operating costs of processes, the problem is then to decide the operating level of each process and amount of each chemical in the list ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...
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Tài liệu The Design of Rolling Bearing Mountings P1 docx
... accuracy of the workpiece mainly depend on the axial rigidity of the spindle headstock and of the rotary table Therefore, the rigidity of the thrust bearings is especially important To increase the ... is made up of the weight of the rotor and the two variable top and bottom fan impellers as well as the thrust of these fan impellers They are supported by the upper thrust bearing The radial ... common: rolling bearings For this reason the brief texts concentrate on the rolling bearing aspects of the applications The operation of the machine allows conclusions to be drawn about the operating...
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Tài liệu The Design of Rolling Bearing Mountings P2 pdf
... roughening of the surfaces (increased running noise) Work end Bearing dimensioning The size of the bearings is dictated by the shaft diameter, which in turn is based on the anticipated vibrations The bearing ... roller bearing FAG NU1026M at the drive end is the floating bearing Heat expansion in the axial direction is freely accommodated in the bearing The cylindrical roller bearing also accommodates the ... processibility of the material Rolls 1, and are subjected to deflection under the high loads in the rolling gap In order to still achieve the thickness tolerances of the sheets in the micrometer range, the...
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Tài liệu The Theory of the Design of Experiments doc
... more frequently than theory of evolution” in the scientific literature Why does the phrase theory of evolution” appear nearly 16 times as frequently as theory of ecology” in the scientific literature ... eschew the phrase the theory of evolution.” Granted, evolution is a theoretically more cohesive field than ecology: Genes, the fundamental units of evolution, are uniquely defined in terms of their ... Thus no unifying theory of everything” lies just beyond the horizon of evolutionary theory By removing the theory of evolution” from our lexicon, we ultimately ensure that the lay public is not...
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Tài liệu The Design Of Manufacturing Systems P2 pptx
... with the system Ranking of Redesign Alternatives Another area requiring research attention in the context of generation of redesign solutions (design advisor) is the ranking of the generated redesign ... Evaluation Typically, the designer designs a product with minimal knowledge about the capabilities and limitations of the manufacturing technology The designer then tries to find out if the design can be ... both the syntactic-level and semanticlevel sharing of information One of the major bottlenecks in building integrated design- manufacturing systems is the incomprehension of the language of Computer-Aided...
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Tài liệu The Design Of Manufacturing Systems P1 docx
... know the prices of chemicals in the various markets and the operating costs of processes, the problem is then to decide the operating level of each process and amount of each chemical in the list ... for the production of each chemical We might then contemplate the in-house production of some of the required ingredients, forcing us to consider another tier of ingredients and by-products The ... limited The case of shut down of an existing plant results when the variable Wit takes a value of zero after a given time period t The economics of shut down can be modeled by the inclusion of the...
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Chapter 15 introduction to the design of electric machinery
... st (15. 2-31) The width of slot between the base of the tips is taken as the average of the distance of the chord length of the inner corners of the tooth tips at the top of the tooth and the ... by the tooth at radius rsi, θtb the angle spanned by the tooth at radius rsb, wtb the width of the tooth base, dtb the depth of the tooth base, dtte the depth of the tooth tip edge, and dttc the ... that the reciprocal of wsiR is set to the average of the reciprocals of the chord lengths between inner corners of slot at the top of the slot (under the tooth tip) and the outer corners of the...
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