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Nächste Überarbeitung		Vorhergehende Überarbeitung
en:grundlagenhandbuch:drehmoment_und_antriebsleistung:enthalpiemodell [2026/01/27 15:39] – deppe2en:grundlagenhandbuch:drehmoment_und_antriebsleistung:enthalpiemodell [2026/02/07 16:04] (aktuell) – [Validation] deppe2
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 First of all, a specific enthalpy curve of a semi-crystalline plastic is considered (Picture 1). At the crystallite melting temperature, the plastic has a corresponding specific enthalpy depending on the type. This enthalpy is divided in PAM into $\Delta h_f$ solid enthalpy (enthalpy change to increase the solid temperature) and $\Delta h_a$ melting enthalpy (enthalpy required to dissolve the crystalline regions). First of all, a specific enthalpy curve of a semi-crystalline plastic is considered (Picture 1). At the crystallite melting temperature, the plastic has a corresponding specific enthalpy depending on the type. This enthalpy is divided in PAM into $\Delta h_f$ solid enthalpy (enthalpy change to increase the solid temperature) and $\Delta h_a$ melting enthalpy (enthalpy required to dissolve the crystalline regions).
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 +{{ :en:grundlagenhandbuch:drehmoment_und_antriebsleistung:en_sigma150_dlg_grundlagenhandbuch_drehmoment_und_antriebsleistung_009.png?nolink |}}
  
 **Picture 1:** Specific enthalpy curve of a partially crystalline polymer **Picture 1:** Specific enthalpy curve of a partially crystalline polymer
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 The new power model was implemented and verified in SIGMA. Identical to other models, the new power model was compared with the values of the experimental investigations to validate the model. The deviations of different process points and material combinations are shown in the following picture. The new power model was implemented and verified in SIGMA. Identical to other models, the new power model was compared with the values of the experimental investigations to validate the model. The deviations of different process points and material combinations are shown in the following picture.
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 +{{ :en:grundlagenhandbuch:drehmoment_und_antriebsleistung:en_sigma150_dlg_grundlagenhandbuch_drehmoment_und_antriebsleistung_0010.png?nolink |}}
  
 **Figure:** Comparison of experimental investigations and simulations **Figure:** Comparison of experimental investigations and simulations