TECNO Flashcards

T1

1
Q

FORÇA

A

acció capaç de modificar l’estar de repós

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2
Q

ESFORÇOS

A

força a la que está sotmesa un objecte i que tendeix a aixafar-lo, corbar-lo, forçar-lo o tallar-lo

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3
Q

LA RESISTENCIA A L’ESFORÇ DEPÉN DE…

A

material amb el que está construit
dimensions
forma
tipos d’esforç

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4
Q

TIPUS D’ESFORÇOS

A
tracció
compressió
flexió
torsió
tall/cisallament
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5
Q

TRACCIÓ

A

arriba a trancar-se

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6
Q

COMPRESSIÓ

A

comprimir alguna cosa —–> X

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7
Q

FLEXIÓ

A

es deforma —–> X

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8
Q

TORSIÓ

A

es torça

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9
Q

TALL/CISALLAMENT

A

es trenca per la força que s’emplea

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10
Q

PROPIETATS MECÀNIQUES DELS MATERIALS

A
resistència 
fragilitat
tenaçitat
elasticitat
plasticitat
duresa
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11
Q

RESISTÈNCIA

A

capacitat que te un material de resistir formes sense trencar-se ni deformar-se
ex. metalls, acers, fustes i plastics

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12
Q

FRAGILITAT

A

si en rebre un cop es trenca

ex. vidre

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13
Q

TENAÇITAT

A

soporten formes i cops sense trencar-se

ex. bat de beisbol, casi de bicicleta

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14
Q

ELASTICITAT

A

recuperar la seva forma després d’haver siguts deformats

ex. gomes de cabell

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15
Q

PLASTICITAT

A

adquirir deformaciones permanents sense trencar-se

ex. plastilina

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16
Q

DURESA

A

no deixar-se ratllar ni penetrar

ex. diamant